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Wiecek, Cheryl A. "VMS on Mach." ACM SIGOPS Operating Systems Review 26, no. 2 (April 1992): 15. http://dx.doi.org/10.1145/142111.964616.
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Tay, Richard. "ITS and VMS." Journal of Advanced Transportation 42, no. 1 (January 2008): 1–3. http://dx.doi.org/10.1002/atr.5670420102.
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Bavithra, Ms M. "Reinforcement Learning for VMs Cluster in VMs Failures Cloud Computing." International Journal for Research in Applied Science and Engineering Technology 9, no. 4 (April 30, 2021): 924–27. http://dx.doi.org/10.22214/ijraset.2021.33743.
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Tlelo-Cuautle, Esteban, Miguel-Aurelio Duarte-Villaseñor, and Ivick Guerra-Gómez. "Automatic Synthesis of VFs and VMs by Applying Genetic Algorithms." Circuits, Systems & Signal Processing 27, no. 3 (April 17, 2008): 391–403. http://dx.doi.org/10.1007/s00034-008-9030-2.
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Basuki, Akbari Indra, and Aciek Ida Wuryandari. "Design and Analysis of Hybrid Vessel Monitoring System based on DTN and Internet Collaboration." Jurnal INKOM 9, no. 2 (May 30, 2016): 57. http://dx.doi.org/10.14203/j.inkom.426.
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In this paper, we propose hybrid Vessel Monitoring System (VMS) design as alternative for current VMS scheme by collaborating internet connection and Disruption-Tolerant-Networks (DTN). The hybrid solution combines offline VMS that use radio networks and online VMS that utilizing satellite-based internet. Hybrid VMS aims to provide a more flexible VMS design and able to speed up delivery process of offline vessel’s data. The concept is both type of vessels must install a standard radio networks for data forwarding. The proposed method to speed up data delivery is by forwarding VMS data from one vessel to another using DTN forwarding scheme. Data can be forwarded to another offline vessel that will return to harbor earlier or to online vessels which have internet connection. Performance measurement is done through simulation analysis using ONE simulator. It aims to measure the speed up data delivery using hybrid VMS implementation compare to a pure offline VMS implementation. Simulation result show that hybrid VMS able to speed up data delivery for offline vessel data in 1.5 up to 2 times faster compare to a pure offline VMS implementation. Hybrid VMS also has advantages in flexible implementation by easily switching between online and offline VMS scheme, according to fisherman financial situation. Spray-and-Wait routing is the most suitable routing algorithm for hybrid VMS according to the efficiency ratio.
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Wang, Jian Jun, and Qiong Wu. "Study on Multi-Objective Optimization Model for VMS Layout on Expressways." Applied Mechanics and Materials 361-363 (August 2013): 2012–15. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.2012.
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In order to determine layout location of variable message signs (VMS) scientifically and reasonably and give full play to its transportation guidance effect, the optimal selection method of expressways VMS layout location is studied based on general rules and requirements of expressways network VMS layout. Construct the multi-objective optimization model of VMS information utilization maximum, VMS effectiveness and VMS total cost minimum based on fuzzy constraint conditions, and the Hang-Jin-Qu expressway VMS layout is analyzed. The results show that the proposed multi-objective optimization model is more in line with the actual need of VMS layout and easy to operate, and has important practical value.
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Clarke, Roger G., Harindra De Silva, and Steven Thorley. "Know Your VMS Exposure." Journal of Portfolio Management 36, no. 2 (January 31, 2010): 52–59. http://dx.doi.org/10.3905/jpm.2010.36.2.052.
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Chacón Rebollo, Tomás, Volker John, and Gert Lube. "The VMS workshop series." SeMA Journal 75, no. 4 (May 4, 2018): 569–71. http://dx.doi.org/10.1007/s40324-018-0158-0.
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Whiting, Todd. "Understanding VAX/VMS security." Computers & Security 11, no. 8 (December 1992): 695–98. http://dx.doi.org/10.1016/0167-4048(92)90087-8.
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Li, Z., and J. H. P. Watson. "Vortex magnetic separation (VMS)." IEEE Transactions on Magnetics 30, no. 6 (1994): 4662–64. http://dx.doi.org/10.1109/20.334182.
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Thurston, Rebecca C., Judith E. Carroll, Morgan Levine, Yuefang Chang, Carolyn Crandall, JoAnn E. Manson, Lubna Pal, Lifang Hou, Aladdin H. Shadyab, and Steve Horvath. "Vasomotor Symptoms and Accelerated Epigenetic Aging in the Women’s Health Initiative (WHI)." Journal of Clinical Endocrinology & Metabolism 105, no. 4 (February 21, 2020): 1221–27. http://dx.doi.org/10.1210/clinem/dgaa081.
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Abstract Purpose The hallmark menopausal symptom, vasomotor symptoms (VMS), has been linked to adverse health indicators. However, the relationship between VMS and biological aging has not been tested. We examined associations between menopausal VMS and biological aging as assessed by 2 DNA methylation-based epigenetic aging indicators previously linked to poor health outcomes. Methods Participants were members of the Women’s Health Initiative Observational Study integrative genomics substudy (N = 1206) who had both ovaries and were not taking hormone therapy. Relationships between VMS at enrollment (presence, severity) or VMS timing groups (no VMS: not at menopause onset nor at study enrollment; early VMS: at menopause onset but not at enrollment; persistent VMS: at menopause onset and study enrollment; and late VMS: at enrollment but not at menopause onset) and epigenetic clock indicators predictive of physical aging and early death (DNAm PhenoAge, DNAm GrimAge) were tested in linear regression models adjusting for age, race/ethnicity, hysterectomy, education, body mass index, smoking, and, in additional models, sleep disturbance. Results Women were on average 65 years of age at enrollment. Severe hot flashes at enrollment were associated with higher DNAm PhenoAge [relative to no hot flashes: B (SE) = 2.79 (1.27), P = 0.028, multivariable]. Further, late-occurring VMS were associated with both higher DNAm PhenoAge [B (SE) = 2.15 (0.84), P = 0.011] and DNAm GrimAge [B (SE) = 1.09 (0.42), P = 0.010, multivariable] relative to no VMS. Main Conclusions Among postmenopausal women, severe or late-occurring VMS were associated with accelerated epigenetic age, controlling for chronological age. Postmenopausal women with severe or late-occurring VMS may have greater underlying epigenetic aging.
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Kim, Catherine, Abbi Lane, Thanh-Huyen T. Vu, Cora B. Lewis, Zhe Yin, Hui Jiang, Richard J. Auchus, and Pamela J. Schreiner. "Prospective early adulthood risk factors for vasomotor symptoms in the Coronary Artery Risk Development in Young Adults study." Menopause 31, no. 2 (February 2024): 108–15. http://dx.doi.org/10.1097/gme.0000000000002306.
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Abstract Objective Previous studies have assessed potential risk factors for vasomotor symptoms (VMS) beginning in midlife. We examined whether early adulthood risk factors predict VMS trajectories over time. Methods We performed a secondary data analysis of the Coronary Artery Risk Development in Young Adults (CARDIA) study, a population-based cohort. We included women who answered questions about VMS at three or more examinations (n = 1,966). We examined whether risk factors at baseline (when participants were aged 18-30 y; average age, 25 y) and the year 15 (Y15) exam (at ages 33-45 y; average age, 40 y) were associated with VMS trajectories from Y15 through Y35. Logistic regression models were used to evaluate the associations with VMS trajectories. Results We identified three trajectories of VMS presence: minimal (40%), increasing over time (27%), and persistent (33%). Baseline factors associated with persistent VMS over time included Black race, less than a high school education, depressive symptoms, migraines, cigarette use, and at Y15 hysterectomy. Baseline factors associated with increasing VMS over time included Black race and lower body mass index. Risk factors for bothersome VMS were similar and also included thyroid disease, although thyroid disease was not associated with persistence of VMS over time. Associations were similar among women who had not undergone hysterectomy and in Black and White women. Conclusions Risk factors for VMS may be identified in early adulthood. Further examination of risk factors such as migraines and depressive symptoms in early adulthood may be helpful in identifying therapies for VMS.
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Sheetal, Annabathula Phani, and Kongara Ravindranath. "High Efficient Virtual Machine Migration Using Glow Worm Swarm Optimization Method for Cloud Computing." Ingénierie des systèmes d information 26, no. 6 (December 27, 2021): 591–97. http://dx.doi.org/10.18280/isi.260610.
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In this paper, high efficient Virtual Machine (VM) migration using GSO algorithm for cloud computing is proposed. This algorithm contains 3 phases: (i) VM selection, (ii) optimum number of VMs selection, (iii) VM placement. In VM selection phase, VMs to be migrated are selected based on their resource utilization and fault probability. In phase-2, optimum number of VMs to be migrated are determined based on the total power consumption. In VM placement phase, Glowworm Swarm Optimization (GSO) is used for finding the target VMs to place the migrated VMs. The fitness function is derived in terms of distance between the main server and the other server, VM capacity and memory size. Then the VMs with best fitness functions are selected as target VMs for placing the migrated VMs. The proposed algorithms are implemented in Cloudsim and performance results show that PEVM-GSO algorithm attains reduced power consumption and response delay with improved CPU utilization.
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Chung, Hsin-Fang, Nirmala Pandeya, Annette J. Dobson, Diana Kuh, Eric J. Brunner, Sybil L. Crawford, Nancy E. Avis, et al. "The role of sleep difficulties in the vasomotor menopausal symptoms and depressed mood relationships: an international pooled analysis of eight studies in the InterLACE consortium." Psychological Medicine 48, no. 15 (February 12, 2018): 2550–61. http://dx.doi.org/10.1017/s0033291718000168.
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AbstractBackgroundMany women experience both vasomotor menopausal symptoms (VMS) and depressed mood at midlife, but little is known regarding the prospective bi-directional relationships between VMS and depressed mood and the role of sleep difficulties in both directions.MethodsA pooled analysis was conducted using data from 21 312 women (median: 50 years, interquartile range 49−51) in eight studies from the InterLACE consortium. The degree of VMS, sleep difficulties, and depressed mood was self-reported and categorised as never, rarely, sometimes, and often (if reporting frequency) or never, mild, moderate, and severe (if reporting severity). Multivariable logistic regression models were used to examine the bi-directional associations adjusted for within-study correlation.ResultsAt baseline, the prevalence of VMS (40%, range 13–62%) and depressed mood (26%, 8–41%) varied substantially across studies, and a strong dose-dependent association between VMS and likelihood of depressed mood was found. Over 3 years of follow-up, women with often/severe VMS at baseline were more likely to have subsequent depressed mood compared with those without VMS (odds ratios (OR) 1.56, 1.27–1.92). Women with often/severe depressed mood at baseline were also more likely to have subsequent VMS than those without depressed mood (OR 1.89, 1.47–2.44). With further adjustment for the degree of sleep difficulties at baseline, the OR of having a subsequent depressed mood associated with often/severe VMS was attenuated and no longer significant (OR 1.13, 0.90–1.40). Conversely, often/severe depressed mood remained significantly associated with subsequent VMS (OR 1.80, 1.38–2.34).ConclusionsDifficulty in sleeping largely explained the relationship between VMS and subsequent depressed mood, but it had little impact on the relationship between depressed mood and subsequent VMS.
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Silva Filho, Tiago João da, Denise Hélen Imaculada Pereira de Oliveira, Cassiano Francisco Weege Nonaka, Éricka Janine Dantas da Silveira, and Lélia Maria Guedes Queiroz. "Immunoexpression of proliferation and apoptosis markers in oral vascular anomalies." Brazilian Dental Journal 33, no. 6 (December 2022): 65–70. http://dx.doi.org/10.1590/0103-6440202205010.
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Abstract The biological behavior of lesions is highly dependent on the imbalance between their proliferative and apoptotic capacity. This study evaluated a correlation between the proliferative and apoptotic rates of different oral vascular anomalies (VAs) by analyzing the immunoexpression of proliferation (Ki-67) and apoptosis (Bcl-2 and Bax) markers in endothelial cells of 20 cases of GLUT-1 positive infantile hemangiomas (IHs), 20 cases of pyogenic granulomas (PGs) and 20 cases of vascular malformations (VMs). Immunoexpression analysis of Ki-67, Bcl-2 and Bax revealed a lower median percentage of positive cells in VMs cases compared to IHs and PGs cases (P <0.001). The Wilcoxon signed‐rank test showed significantly higher percentages of immunostaining for Bax than for Bcl‐2 in IHs (P = 0.048). In the group of PGs, a positive correlation was observed between the immunoexpressions of Ki-67 and Bax (r = 0.476; P = 0.034). Although oral IHs, PGs and VMs present similar clinical and histopathological features, each of these lesions has its etiopathogenic particularities. The results of this study suggest that different biological behaviors of VAs may be related to differences in the proliferative and apoptotic profiles of their endothelial cells.
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Morin, Lisellet, Noah Zanville, Rosalind Guest, Muni Rubens, and M. Beatriz Currier. "Prevalence and risk factors for vasomotor symptoms in Hispanic female breast cancer survivors, 0-3 years post-treatment: Results of a single-center retrospective analysis." Journal of Clinical Oncology 39, no. 15_suppl (May 20, 2021): e24038-e24038. http://dx.doi.org/10.1200/jco.2021.39.15_suppl.e24038.
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e24038 Background: Early detection and a growing complement of treatment options have led to improved survival among women with breast cancer in the U.S. Vasomotor symptoms (VMS) such as hot flashes and night sweats are among the most common side effects reported by breast cancer survivors (BCS) following treatment. These symptoms may affect quality of life and increase the risk of non-adherence to anti-hormonal therapies. Hispanics are one of the fastest growing ethnic populations in the U.S. However, research exploring whether Hispanic BCS report VMS at similar rates as their non-Hispanic counterparts remains an important gap in the science. The purpose of this study was to compare the prevalence and risk factors for VMS between Hispanic and non-Hispanic BCS following cancer treatment. Methods: Data for this single-center, retrospective study came from a database of self-reported symptom data collected at survivorship visits. Results: Over a 2.8-year period, 815 female BCS were evaluated for VMS (Hispanic: 63.0% (n=513) vs. Non-Hispanic: 37.0% (n = 302)). Mean age of the sample was 58.4 + 11.7 (range 24.2 - 91.8).Approximately four in ten (42.9%) BCS reported VMS at their initial survivorship visit, 0-3 years post-treatment. Results found virtually no difference in VMS prevalence between Hispanic and non-Hispanic BCS, (42.5% vs 43.7%, p = 0.735). BCS who reported VMS after treatment were 6.5 years younger, on average, than BCS who did not report VMS (54.7 ±11.0 vs. 61.2 ±11.3, p < 0.001). Multivariate logistic regression models using age, race, stage of cancer, chemotherapy, radiation and hormone therapy as predictors showed that only age was associated with reporting VMS. For every one-year increase in age, the odds of reporting VMS fell by approximately 5.3% (OR: 0.947, 95% CI: 0.933-0.963, p < 0.0001). Conclusions: Results found no difference in VMS prevalence between Hispanic and non-Hispanic BCS. VMS were reported by over 40 % of BCS in the study. In addition, symptoms were more prevalent in younger BCS. Given the potential impact of VMS on quality of life and mediation adherence, studies validating these findings as well as exploring the prevalence and risk factors for VMS in Hispanic BCS from distinct nationalities and cultures are needed.
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Narantuya, Jargalsaikhan, Taejin Ha, Jaewon Bae, and Hyuk Lim. "Dependency Analysis based Approach for Virtual Machine Placement in Software-Defined Data Center." Applied Sciences 9, no. 16 (August 7, 2019): 3223. http://dx.doi.org/10.3390/app9163223.
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In data centers, cloud-based services are usually deployed among multiple virtual machines (VMs), and these VMs have data traffic dependencies on each other. However, traffic dependency between VMs has not been fully considered when the services running in the data center are expanded by creating additional VMs. If highly dependent VMs are placed in different physical machines (PMs), the data traffic increases in the underlying physical network of the data center. To reduce the amount of data traffic in the underlying network and improve the service performance, we propose a traffic-dependency-based strategy for VM placement in software-defined data center (SDDC). The traffic dependencies between the VMs are analyzed by principal component analysis, and highly dependent VMs are grouped by gravity-based clustering. Each group of highly dependent VMs is placed within an appropriate PM based on the Hungarian matching method. This strategy of dependency-based VM placement facilitates reducing data traffic volume of the data center, since the highly dependent VMs are placed within the same PM. The results of the performance evaluation in SDDC testbed indicate that the proposed VM placement method efficiently reduces the amount of data traffic in the underlying network and improves the data center performance.
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Phuong, To Van, and Duong Thanh Hang. "Effectiveness of vessel monitoring systems in managing and monitoring fishing vessels in Ca Mau province, Vietnam." IOP Conference Series: Earth and Environmental Science 1278, no. 1 (December 1, 2023): 012009. http://dx.doi.org/10.1088/1755-1315/1278/1/012009.
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Abstract Since October 2017, Vietnam’s fisheries have made efforts to address the European Commission (EC)’s yellow card warning. One key factor in removing the yellow card warning was implementing a fishing vessel monitoring system (VMS) to manage and monitor fishing vessels at sea and prevent them from violating foreign waters. However, there has been limited research evaluating the effectiveness of VMS in Vietnam. To address this gap, this study focused on evaluating the use of VMS in Ca Mau province, one of the country’s dominant fisheries. The study collected primary and secondary data from 94 surveyed fishermen who were captains and owners of Ca Mau fishing vessels equipped with VMS between December 2021 and April 2022. The findings showed that 99.5% of fishing vessels were equipped with VMS, with the ZuniVN-01 equipment being the most commonly selected (39.7%), followed by Viettel S-tracking (24.2%), and BA-SAT-01 (23.5%). However, these VMS failures occurred frequently, with the most significant being disconnection for more than ten days between the VMS onboard and the local control center. Despite these failures, 96.8% of respondents believed that VMS was effective, particularly for emergency rescue functions (73.4%). The automatic transmission of the vessel’s location via GPS every two or three hours received the highest rating (78.7%) from respondents. Additionally, most fishers (68.5%) believed that the core requirements of VMS were appropriate. Based on the study’s results, practical recommendations were proposed to stakeholders to improve the effectiveness of VMS.
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Pei, Yu Long, and Xue Li. "Research on Guiding Strategies of VMS and their Effects Based on Intelligent Materials." Advanced Materials Research 321 (August 2011): 50–54. http://dx.doi.org/10.4028/www.scientific.net/amr.321.50.
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VMS is a typical group-guiding facility of intelligent transport system (ITS) in urban road network. It has been based on certain intelligent materials. In recent years, VMS has been paid extensive attention and applied widely, so the research on its guiding strategies and effects is very important. Based on SP survey, the drivers’ route-choice behavior was compared and analyzed under different guiding strategies of VMS with the development of intelligent materials. This study applied Logit model and BP neural network model to establish respectively the model of calculating the probability of drivers’ changing route according to VMS, and compared these two models, furthermore, new thought of using these two methods comprehensively was put forward. Finally, the present situation of applying VMS in Beijing was concluded by investigating the drivers’ evaluation and suggestion about VMS guiding effects, that is, VMS application has obtained sound effects up to now.
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Annane, Boubakeur, and Alti Adel. "Proxy-3S." International Journal of Information Security and Privacy 16, no. 1 (January 2022): 1–38. http://dx.doi.org/10.4018/ijisp.2022010116.
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Virtualization plays a key role in the area of Mobile Cloud Computing (MCC). In MCC, the protection of distributed VMs and mobile users’ sensitive data, in terms of security and privacy, is highly required. This paper presents a novel cloud proxy known as Three Policies Secure Cloud Proxy (Proxy-3S) that combines three security policies: VM users’ access control, VMs’ secure allocation and VMs’ secure communication. The proposed approach aims to keep the distributed VMs safe in different servers on the cloud. It enhances the access authorization to permit intensive distributed application tasks on the cloud or mobile devices while processing and communicating private information between VMs. Furthermore, an algorithm that enables secure communication among distributed VMs and protection of sensitive data in VMs on the cloud is proposed. Several experiments were conducted using a real-world healthcare distributed application. The experiments achieved promising results for high-level data protection and good efficiency rating compared to existing works.
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Yan, Xuedong, and Jiawei Wu. "Effectiveness of Variable Message Signs on Driving Behavior Based on a Driving Simulation Experiment." Discrete Dynamics in Nature and Society 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/206805.
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Variable message signs (VMSs), as one of the important ITS devices, provide real-time traffic information of road network to drivers in order to improve route choice and relieve the traffic congestion. In this study, the effectiveness of VMS on driving behavior was tested based on a driving simulation experiment. A road network with three levels of VMS location to route-diverging intersection and three types of VMS information format was designed in a high fidelity driving simulator platform. Fifty-two subjects who were classified by driver age, gender, and vocation successfully completed this experiment. The experimental results showed that driver characteristics, VMS location, and information format profoundly influence driving behaviors. Based on the research findings, it is suggested that VMS would be positioned between 150 m and 200 m upstream of the diverging point to balance the VMS effects on traffic safety and operation and the graphic information VMS format is better than the format with text massage only.
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Kodentsova, V. M., D. V. Risnik, and A. G. Moiseenok. "ALGORITHM FOR EFFECTIVE USE OF VITAMIN AND MINERAL SUPPLEMENTS." Journal of the Grodno State Medical University 22, no. 2 (May 2024): 177–84. http://dx.doi.org/10.25298/2221-8785-2024-22-2-177-184.
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At present time, there is a huge range of vitamin and mineral supplements (VMS), that differ in composition and doses of micronutrients, which complicates the choice and their effective use. The purpose of the review is to substantiate the algorithm for effective use of VMS for the correction of micronutrient deficiency. The general pattern in the VMS administration is that there is an inverse relationship between the dose of micronutrients and the increase in their concentration in a fasting blood test after an overnight break. Improving vitamin status requires time, that is longer when taking VMS with low doses, and for each vitamin the time to achieve optimal concentrations is different. To optimize the vitamin status by means of VMS administration containing vitamins in doses corresponding to 100% of the recommended daily intake (RDI) takes from 1.5 months for B vitamins to 3-5 months for vitamin D. A course of VMS administration for 1 months may not be enough to correct the deficiency of all vitamins. After stopping additional use of VMS, a “wash-out” of vitamins occurs for one to several weeks, i.e. decrease of blood concentration and return to the original state of deficiency. A universal, scientifically based scheme for the effective use of VMS consists of a course of VMS administration with high (200-300% of the RDI) micronutrients, especially after an illness or taking antibiotics, and then switching to constant use of VMS containing deficient micronutrients in a dose of 50-100 % of RDI. Women during the periconceptional period and throughout pregnancy are recommended to take daily multicomponent VMS, specifically designed for pregnant women, containing doses of micronutrients that correspond to the physiological needs of the body.
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Baharudin, Azli, Fatimah Othman, Syafinaz Mohd Sallehuddin, Suhaila Abd Ghafar, Khairul Hasnan Amali, Norazizah Ibrahim Wong, and Ahmad Ali Zainuddin. "THE REASON FOR VITAMIN-MINERAL SUPPLEMENT INTAKE AMONG SECONDARY SCHOOL ADOLESCENTS IN MALAYSIA AND ITS ASSOCIATION WITH NUTRITIONAL STATUS AND DIETARY PRACTICE." JOURNAL OF HEALTHCARE IN DEVELOPING COUNTRIES 3, no. 2 (2023): 43–51. http://dx.doi.org/10.26480/jhcdc.02.2023.43.51.
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Vitamin mineral supplement (VMS) consumption is prevalent among the population, particularly adolescents. However, literature about the factors associated with the reasons for consuming VMS has not been investigated in Malaysia, indeed adolescents’ nutrition is important as they experience body change during this period. Thus, this cross-sectional, national health study aims to determine the association between nutritional status, dietary practice and reasons for VMS consumption among secondary schools in Malaysia. A total of 40,087 adolescents aged 10-18 completed the questionnaire. Among them, only 22.6% (9,077) of them from secondary school consumed VMS and were included in this study. Gender, height-for-age, strata, ethnicity, hunger experience, eating out and breakfast intake frequency were associated with the reasons for VMS intake. After the adjustment, stunted adolescents were more likely to consume VMS due to the doctor’s prescription (RRR:1.51, 95% CI: 1.11-2.10). Adolescents who sometimes experienced hunger were more probable to consume VMS due to doctor’s instruction, self-awareness and friends’ influence as compared to other unspecified reasons (RRR: 1.41, 95% CI: 1.08-1.85; RRR 1.38, 95% CI: 1.07-1.77; RRR: 1.98, 95% CI: 1.27-3.08, respectively). No association was found between dietary behaviour and the reason for the VMS intake. For meal pattern, adolescents who skipped breakfast were less likely to consume VMS due to doctor’s instruction, parents’ advices and self-awareness (RRR: 0.53, 95% CI: 0.39-0.72; RRR: 0.50, 95% CI: 0.38-0.66; RRR: 0.59, 95% CI: 0.45-0.78, respectively). This study suggested that further studies were needed to investigate the role of VMS use in relation to nutrient adequacy, overconsumption and health.
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Gold, Ellen B., Sybil L. Crawford, Katherine Leung, Gail Greendale, Katherine W. Reeves, Hadine Joffe, and Nancy E. Avis. "Vasomotor symptoms in midlife women with incident breast cancer: pink SWAN." Breast Cancer Research and Treatment 191, no. 1 (October 25, 2021): 125–35. http://dx.doi.org/10.1007/s10549-021-06425-y.
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Abstract Purpose We compared trajectories of vasomotor symptoms (VMS) and their risk factors in women with breast cancer (BrCa) to those of cancer-free controls. Methods Data were from 15 nearly annual follow-up visits (1996–2017) of the multi-racial/ethnic cohort of midlife women enrolled in the Study of Women’s Health Across the Nation (SWAN). We compared women with incident BrCa to controls for patterns of VMS, controlling for risk factors identified in bivariate analyses using multivariable longitudinal analyses. Results Characteristics at study entry largely did not differ between cases (n = 151) and controls (n = 2161). Adjusted prevalence of any VMS increased significantly among cases from diagnosis to 2.75 years post diagnosis [per-year adjusted odds ratio (aOR) = 1.76, 95% confidence interval (CI) 1.39–2.24], peaking at 2.75 years post diagnosis, whereas prevalence was stable among controls in this interval [aOR = 1.04, 95% CI 0.99–1.11]. Beyond 2.75 years post diagnosis, prevalence declined significantly in cases [aOR = 0.72, 95% CI 0.61–0.84] and less in controls [aOR = 0.96, 95% CI 0.92–1.00]. Patterns were similar for frequent VMS. Adjustment for tamoxifen use slightly reduced the per-year OR for any prevalent VMS post diagnosis, partially explaining excess VMS in cases. Other treatments were unassociated with VMS. Conclusions Patterns of prevalent VMS reporting differed significantly between cases and controls, particularly post diagnosis, the latter only partially explained by tamoxifen use among cases. Risk factors for VMS largely did not differ between cases and controls.
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Candia, Tanya. "How VMS keeps out intruders." Computers & Security 9, no. 6 (October 1990): 499–502. http://dx.doi.org/10.1016/0167-4048(90)90125-d.
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Shepperson, Jennifer L., Niels T. Hintzen, Claire L. Szostek, Ewen Bell, Lee G. Murray, and Michel J. Kaiser. "A comparison of VMS and AIS data: the effect of data coverage and vessel position recording frequency on estimates of fishing footprints." ICES Journal of Marine Science 75, no. 3 (December 26, 2017): 988–98. http://dx.doi.org/10.1093/icesjms/fsx230.
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Abstract Understanding the distribution of fishing activity is fundamental to quantifying its impact on the seabed. Vessel monitoring system (VMS) data provides a means to understand the footprint (extent and intensity) of fishing activity. Automatic Identification System (AIS) data could offer a higher resolution alternative to VMS data, but differences in coverage and interpretation need to be better understood. VMS and AIS data were compared for individual scallop fishing vessels. There were substantial gaps in the AIS data coverage; AIS data only captured 26% of the time spent fishing compared to VMS data. The amount of missing data varied substantially between vessels (45–99% of each individuals' AIS data were missing). A cubic Hermite spline interpolation of VMS data provided the greatest similarity between VMS and AIS data. But the scale at which the data were analysed (size of the grid cells) had the greatest influence on estimates of fishing footprints. The present gaps in coverage of AIS may make it inappropriate for absolute estimates of fishing activity. VMS already provides a means of collecting more complete fishing position data, shielded from public view. Hence, there is an incentive to increase the VMS poll frequency to calculate more accurate fishing footprints.
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Rector, D. M., C. A. Richard, R. J. Staba, and R. M. Harper. "Sleep states alter ventral medullary surface responses to blood pressure challenges." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 278, no. 4 (April 1, 2000): R1090—R1098. http://dx.doi.org/10.1152/ajpregu.2000.278.4.r1090.
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Ventral medullary surface (VMS) activity declines during rapid eye movement (REM) sleep, suggesting a potential for reduced VMS responsiveness to blood pressure challenges during that state. We measured VMS neural activity, assessed as changes in reflected 660-nm wavelength light, during pressor and depressor challenges within sleep/waking states in five adult, unrestrained, unanesthetized cats and in two control cats. Phenylephrine elevated blood pressure and elicited an initial VMS activity decline and a subsequent rise in VMS activity in all states, although the initial decline during quiet sleep occurred only in rostral placements. Phasic REM periods elicited a momentary recovery from the evoked activity rise, and arousals diminished the overall elevation in activity. A sodium nitroprusside depressor challenge increased VMS activity more in REM sleep than in quiet sleep, with the increase being even less in waking. Enhanced responses to depressor challenges during REM sleep suggest a loss of dampening of evoked activity during that state; state-related differential baroreflex sensitivity may result from sleep-waking changes in VMS responses to blood pressure challenges.
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Ou Yang, Xi Jun, Xi Zhang, and Hang Wang. "Effect Evaluation and Modeling of Variable Message Signs on Route Choice Behavior." Applied Mechanics and Materials 587-589 (July 2014): 2003–6. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.2003.
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Based on SP survey, this study researched on the driver's personal property, travel attribute and VMS (Variable Message Signs) attribute. On this basis, combining with the traffic survey data, the multinomial Logit models were used to reflect the route choice behavior. The data were analyzed by Matlab software, then to compare the effect of VMS under different traffic conditions, and proved the rationality of the model. The results of SP survey show that the main factors that affect drivers' route choice are familiarity of road network, accuracy of VMS and attention to VMS. The calculations of Multinomial Logit model demonstrate that the effect of VMS is more obvious during peak period, and it’s more effective under traffic accident conditions. Combining qualitative and quantitative analysis, it provides suggestions for the widely application of the VMS in Changsha city.
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TAKIZAWA, KENJI, DARREN MONTES, SPENSER MCINTYRE, and TAYFUN E. TEZDUYAR. "SPACE–TIME VMS METHODS FOR MODELING OF INCOMPRESSIBLE FLOWS AT HIGH REYNOLDS NUMBERS." Mathematical Models and Methods in Applied Sciences 23, no. 02 (January 8, 2013): 223–48. http://dx.doi.org/10.1142/s0218202513400022.
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Deforming-Spatial-Domain/Stabilized Space–Time (DSD/SST) formulation was developed for flow problems with moving interfaces and has been successfully applied to some of the most complex problems in that category. A new version of the DSD/SST method for incompressible flows, which has additional subgrid-scale representation features, is the space–time version of the residual-based variational multiscale (VMS) method. This new version, called DSD/SST-VMST and also Space–Time VMS (ST-VMS), provides a more comprehensive framework for the VMS method. We describe the ST-VMS method, including the embedded stabilization parameters, and assess its performance in computation of flow problems at high Reynolds numbers by comparing the results to experimental data. The computations, which include those with 3D airfoil geometries and spacecraft configurations, signal a promising future for the ST-VMS method.
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Srinivasan, Karthik K., and Arun Krishnamurthy. "Roles of Spatial and Temporal Factors in Variable Message Sign Effectiveness Under Nonrecurrent Congestion." Transportation Research Record: Journal of the Transportation Research Board 1854, no. 1 (January 2003): 124–34. http://dx.doi.org/10.3141/1854-14.
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The spatial and temporal network dynamics induced by variable message sign (VMS) information under nonrecurrent congestion are investigated. Computational experiments were performed to analyze the role of incident attributes (number, location, and timing), information characteristics (delay, update frequency, compliance rates), and alternative operational strategies. The network performance of VMSs was compared with those of in-vehicle devices (IVDs). The findings indicate that VMS performance varies dynamically and depends on the interactions between information lag, diversion rate (overconcentration) onto alternative paths, efficiency of reported paths, time-varying interactions between vehicles with VMS information and vehicles without VMS information, residual capacity on alternate paths, compliance rates, and spatial incident characteristics. The VMS strategies that account for information quality, compliance, and overconcentration are likely to outperform purely travel time-based strategies. The findings have important implications for the design, operation, and evaluation of VMS and IVD systems.
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Yusof, Norhasliza. "Wolf-Rayet stars from Very Massive Stars." Proceedings of the International Astronomical Union 9, S307 (June 2014): 152–53. http://dx.doi.org/10.1017/s1743921314006632.
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AbstractMany studies focused on very massive stars (VMS) within the framework of Pop. III stars, because this is where they were thought to be abundant. In this work, we focus on the evolution of VMS in the local universe following the discovery of VMS in the R136 cluster in the Large Magellanic Cloud (LMC). We computed grids of VMS evolutionary tracks in the range 120–500 M⊙ with solar, LMC and Small Magellanic Cloud metallicities. All models end their lives as Wolf-Rayet (WR) stars of the WC (or WO) type. We discuss the evolution and fate of VMS around solar metallicity with particular focus on the WR phase. For example, we show that a distinctive feature that may be used to disentangle Wolf-Rayet stars originating from VMS from those originating from lower initial masses is the enhanced abundances of Ne and Mg at the surface of WC stars.
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Yue, Dong, Cheng Fan Rong, Cai Ning, Hu Liang, Liu Ai Lian, Wang Ru Xin, and Luo Ya Hong. "Reduction of metal artifacts from unilateral hip arthroplasty on dual-energy CT with metal artifact reduction software." Acta Radiologica 59, no. 7 (September 12, 2017): 853–60. http://dx.doi.org/10.1177/0284185117731475.
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Background The evaluation of hip arthroplasty is a challenge in computed tomography (CT). The virtual monochromatic spectral (VMS) images with metal artifact reduction software (MARs) in spectral CT can reduce the artifacts and improve the image quality. Purpose To evaluate the effects of VMS images and MARs for metal artifact reduction in patients with unilateral hip arthroplasty. Material and Methods Thirty-five patients underwent dual-energy CT. Four sets of VMS images without MARs and four sets of VMS images with MARs were obtained. Artifact index (AI), CT number, and SD value were assessed at the periprosthetic region and the pelvic organs. The scores of two observers for different images and the inter-observer agreement were evaluated. Results The AIs in 120 and 140 keV images were significantly lower than those in 80 and 100 keV images. The AIs of the periprosthetic region in VMS images with MARs were significantly lower than those in VMS images without MARs, while the AIs of pelvic organs were not significantly different. VMS images with MARs improved the accuracy of CT numbers for the periprosthetic region. The inter-observer agreements were good for all the images. VMS images with MARs at 120 and 140 keV had higher subjective scores and could improve the image quality, leading to reliable diagnosis of prosthesis-related problems. Conclusion VMS images with MARs at 120 and 140 keV could significantly reduce the artifacts from hip arthroplasty and improve the image quality at the periprosthetic region but had no obvious advantage for pelvic organs.
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Chonan, T., S. Okabe, W. Hida, T. Izumiyama, Y. Kikuchi, and T. Takishima. "Inhomogeneous response of expiratory muscle activity to cold block of the ventral medullary surface." Journal of Applied Physiology 71, no. 5 (November 1, 1991): 1723–28. http://dx.doi.org/10.1152/jappl.1991.71.5.1723.
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We assessed the effects of cooling the ventral medullary surface (VMS) on the activity of chest wall and abdominal expiratory muscles in eight anesthetized artificially ventilated dogs after vagotomy and denervation of the carotid sinus nerves. Electromyograms (EMGs) of the triangularis sterni, internal intercostal, abdominal external oblique, abdominal internal oblique, and transversus abdominis muscles were measured with EMG of the diaphragm as an index of inspiratory activity. Bilateral localized cooling (2 x 2 mm) in the thermosensitive intermediate part of the VMS produced temperature-dependent reduction in the EMG of diaphragm and abdominal muscles. The rib cage expiratory EMGs were little affected at 25 degrees C; their amplitudes decreased at lower VMS temperatures (less than 20 degrees C) but by significantly fewer degrees than the diaphragmatic and abdominal expiratory EMGs at a constant VMS temperature. With moderate to severe cooling (less than 20 degrees C) diaphragmatic EMG disappeared, but rib cage expiratory EMGs became tonic and resumed a phasic pattern shortly before the recovery of diaphragmatic EMG during rewarming of the VMS. These results indicate that the effects of cooling the VMS differ between the activity of rib cage and abdominal expiratory muscles. This variability may be due to inhomogeneous inputs from the VMS to expiratory motoneurons or to a different responsiveness of various expiratory motoneurons to the same input either from the VMS or the inspiratory neurons.
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Baillie, Rebecca, Chris Schelling, Rick Ridgewell, Katherine Kudrycki, Douglas Chung, Christina Friedrich, and Mike Reed. "Modeling shows the NK3R antagonist, ACER-801, reduces treatment-induced vasomotor symptoms." Journal of Clinical Oncology 39, no. 15_suppl (May 20, 2021): e13013-e13013. http://dx.doi.org/10.1200/jco.2021.39.15_suppl.e13013.
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e13013 Background: Hot flashes or vasomotor symptoms (VMS) are a common side effect of hormone deprivation (HD) therapy. Up to 80 % of cancer patients treated with tamoxifen (antiestrogen treatment) or leuprolide (androgen deprivation) have VMS. In some cases, patients discontinue HD therapy due to VMS severity and lower quality of life; therefore, reducing VMS is critical for patient compliance. NK3 receptor (NK3R) antagonists have previously been shown to reduce VMS in postmenopausal women. ACER-801 is a candidate NK3R antagonist drug intended to alleviate VMS severity when used with HD therapy. We used Quantitative Systems Pharmacology (QSP) modeling to predict the likely efficacy of ACER-801 in patients on HD therapy and evaluate the potential of hepatic drug-drug interactions between ACER-801 and tamoxifen or leuprolide. Methods: The model is composed of KNDy neurons in the arcuate nucleus with NKB, dynorphin, and estradiol effects on KNDy neurons, HPG axis, sex hormones, and neuroendocrine feedback. ACER-801, tamoxifen, and leuprolide PK, PD, and hepatic metabolism are included in the model. The model was developed, qualified, and tested using literature data. A tamoxifen-treated postmenopausal female virtual patient (VP) and leuprolide-treated male VP were created based on typical patients included in clinical trials. VMS severity and frequency were estimated based on the level of NKB binding to NK3R. Results: In the male VP, simulated leuprolide administration induced hypertrophy of KNDy neurons and VMS over six months. Coadministration of ACER-801 with leuprolide reduced VMS frequency and severity to near 0 in short-term (5-week) simulations. Simulations predict ACER-801 will not alter leuprolide metabolism nor increase plasma testosterone concentrations. Tamoxifen treatment increased VMS by 15% in simulations with the postmenopausal VP. Coadministration of ACER-801 with tamoxifen in this VP reduced VMS by 75% compared to tamoxifen monotherapy. ACER-801 had minimal effects on plasma estradiol concentrations in the postmenopausal VP. Drug-drug interactions between ACER-801 and tamoxifen were dependent on the simulated bioavailability of ACER-801. Using current estimates of ACER-801 bioavailability in the model, the hepatic concentration of ACER-801 had limited effects on tamoxifen metabolism, which are not expected to necessitate dose adjustments. Conclusions: Using a QSP neurobiology model as a research tool enabled us to evaluate the efficacy of the NK3R antagonist, ACER-801, to treat HD therapy-induced VMS. Simulations show ACER-801 may be highly efficacious for the treatment of induced-VMS. The research provided estimates of DDI with ACER-801 and tamoxifen and what clinical experiments would be needed to confirm those estimates.
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Hidayat, Taufik, Kalamullah Ramli, R. Deiny Mardian, and Rahutomo Mahardiko. "Towards Improving 5G Quality of Experience: Fuzzy as a Mathematical Model to Migrate Virtual Machine Server in The Defined Time Frame." Journal of Applied Engineering and Technological Science (JAETS) 4, no. 2 (June 5, 2023): 711–21. http://dx.doi.org/10.37385/jaets.v4i2.1646.
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The industry and government have recently acknowledged and used virtual machines (VM) to promote their businesses. During the process of VM, some problems might occur. The issues, such as a heavy load of memory, a large load of CPU, a massive load of a disk, a high load of network and time-defined migration, might interrupt the business processes. This paper identifies the migration process among hosts for VM to overcome the problem within the defined time frame of migration. The introduction of VMs migration in a timely manner is to detect a problem earlier. There are workload parameters, such as network, CPU, disk and memory as our parameters. To overcome the issue, we have to follow the Model named Fuzzy rule. The rule follows the basic of tree model for decision-making. The application of the fuzzy Model for the study is to determine VMs allocation from busy VMs to vacant VMs for balancing purposes. The result of the study showed that the use of the fuzzy Model to forecast VMs migration based on the defined rule had 2 positive impacts. The positive impacts are (1) Time frame live migration of VMs can reduce workload by 80 %. This aims to reduce failures in performing a live migration of VMs to increase data center performance. (2) In testing, the fuzzy Model can provide results with an accuracy of 90 %, so this model can perform a live migration of VMs precisely in determining the execution time. Next, the workload could be balanced among VMs. This research could be used further to improve 5G Quality of Experience (QoE) shortly.
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Tian, Fanghua, Yin Zhang, Chao Zhou, Qizhong Zhao, Zhonghai Yu, Adil Murtaza, Wenliang Zuo, Sen Yang, and Xiaoping Song. "Giant Vertical Magnetization Shift Caused by Field-Induced Ferromagnetic Spin Reconfiguration in Ni50Mn36Ga14 Alloy." Materials 13, no. 21 (October 22, 2020): 4701. http://dx.doi.org/10.3390/ma13214701.
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Vertical magnetization shift (VMS) is a special type of exchange bias effect that may lead to a revolution in future ultrahigh-density magnetic recording technology. However, there are very few reports focusing on the performance of VMS due to the unclear mechanism. In this paper, a giant vertical magnetization shift (ME) of 6.34 emu/g is reported in the Ni50Mn36Ga14 alloy. The VMS can be attributed to small ferromagnetic ordered regions formed by spin reconfiguration after field cooling, which are embedded in an antiferromagnetic matrix. The strong cooling-field dependence, temperature dependence, and training effect all corroborate the presence of spin reconfiguration and its role in the VMS. This work can enrich VMS research and increase its potential in practical applications as well.
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Wu, Yiping, Zilong Zhao, Fuwei Wu, and Jian Rong. "Information Volume Threshold for Graphical Variable Message Signs Based on Drivers’ Visual Cognition Behavior." Journal of Advanced Transportation 2022 (December 10, 2022): 1–15. http://dx.doi.org/10.1155/2022/7693492.
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Variable message signs (VMS) are widely employed to offer drivers dynamic traffic information. However, it is still lacking practical guidance about the information volume displayed on a graphical VMS. Building on the result of the subjective questionnaire survey, a static cognitive experiment was conducted to analyze the influence of volume information (i.e., elements and displaying the number of roads) of graphical VMS on drivers’ visual cognition characteristics and then determine the threshold number of roads displayed on VMS. Forty-five drivers participated in the static cognitive experiment. Five indicators, including visual cognition time, cognition accuracy, comprehension accuracy, general assessment, and information acceptance, were used to estimate the influences of graphical VMS. Study results by descriptive statistics and statistical hypothesis testing indicated that drivers also preferred auxiliary elements (i.e., distance or time information) besides basic design elements (i.e., driving direction, current position, and road name) displayed on graphical VMS. With the increase in information volume, driver visual cognition time increased while other companion indexes (i.e., visual cognition accuracy and comprehension accuracy) generally worsened. Combining the data of drivers’ objective behavior and subjective scoring, the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method revealed that the number of roads shown on the graphical VMS should be no greater than five. The study results were verified by dynamic simulation experiments. This finding provides a supplement for the design standards and usage specifications for VMS.
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M., Mohankumar, Balamurugan K., Singaravel G., and Menaka S.R. "A Dynamic Workflow Scheduling Method based on MCDM Optimization that Manages Priority Tasks for Fault Tolerance." International Academic Journal of Science and Engineering 11, no. 1 (January 6, 2024): 09–14. http://dx.doi.org/10.9756/iajse/v11i1/iajse1102.
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Because it offers efficient on-demand service delivery over the internet, cloud computing has become more and more popular. An architectural model for cloud computing energy management is provided by the suggested Ant Lion algorithm. Virtual Machines (VMs) in cloud systems are assigned to hosts based not so much on their overall and long-term use, but rather on their immediate resource consumption, including RAM availability. The placement and scheduling processes are frequently computationally demanding and have the potential to affect the performance of deployed virtual machines. In this research work, we offer a strategy that considers the historical resource use of virtual machines (VMs) over time while scheduling them in the cloud. Our goal is to use the Ant lion approach to schedule virtual machines (VMs) in a way that maximizes performance by evaluating the utilization levels of prior VMs. The goal is to reduce the degradation of performance brought about by Cloud administration tasks like as virtual machine deployment, which might impact systems that have already been installed. Furthermore, congested virtual machines (VMs) sometimes take up resources from nearby VMs, increasing the VMs' actual CPU use. Our results show that by learning and adjusting to system behavior over time, our strategy outperforms conventional instant-based physical machine selection. We offer the idea of scheduling virtual machines (VMs) using resource monitoring data from past VM resource use. By using the Ant lion classifier, four fewer physical machines are needed.
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Cole, Katherine, Sharon McGee, Mark J. Clemons, Michelle Liu, Fiona MacDonald, Lisa Vandermeer, Terry L. Ng, Gregory Russell Pond, and Khaled El Emam. "Evaluating response to interventions for vasomotor symptoms in patients with breast cancer: A patient-centered approach." Journal of Clinical Oncology 41, no. 16_suppl (June 1, 2023): e24126-e24126. http://dx.doi.org/10.1200/jco.2023.41.16_suppl.e24126.
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e24126 Background: Vasomotor symptoms (VMS), such as hot flashes, are a common reason for early discontinuation of endocrine therapy for patients (pts) with breast cancer (BC). The optimal intervention for VMS remains unknown. Using a novel symptom change analysis and regression trees, we examined whether clinically important change in VMS severity depends on baseline symptomatology. Methods: In this prospective study, pts with BC experiencing VMS chose either a lifestyle (LS), or non-LS (i.e. complementary and alternative therapies [CAM], prescription medications [PM], or endocrine therapy modification [ETM]) intervention. The primary outcome was change in symptom severity using the 10-point Hot Flush Rating Scale (HFRS). Patients declining interventions were included as controls. At the end of the 6-week intervention, participants rated the effectiveness of their chosen intervention on a five-point Likert scale. A logistic sigmoid function and Bayesian optimization were used to weight the change in VMS score based on baseline VMS severity. A regression tree was trained to predict which intervention resulted in the greatest improvement in VMS at 6 weeks. Results: 100 baseline and follow-up questionnaires from 85 pts were included in an intention to treat analysis. The median baseline HFRS was 5.0 (IQR 3.33 ,7.00). Selected interventions included LS (27%), CAM (25%), PM (11%) and ETM (8%), with 29% declining interventions. After removal of missing data, 59 individuals provided responses for both the HFRS score and the effectiveness score. Higher baseline HFRS scores had greater impact on symptom change scores. The largest difference in VMS improvement was noted between the non-LS (median symptom change –0.82, IQR –2.00, –0.01) and LS/control groups (median symptom change – 0.38, IQR –1.46, 0.00) (Table 1). Of non-LS interventions, CAM had the greatest improvement in VMS severity. Pre-menopausal individuals who pursued LS interventions had the least improvement in VMS severity. Conclusions: Interventions for VMS were most impactful among pts with greater baseline symptoms. While LS interventions were the most commonly selected intervention, the resulting improvement in symptoms at 6 weeks was negligible, and alternative strategies should be encouraged. Future studies integrating pt preferences and accounting for baseline symptom severity are needed. [Table: see text]
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REVAN, Mustafa Kemal. "Review of Late Cretaceous volcanogenic massive sulfide mineralization in the Eastern Pontides, NE Turkey." TURKISH JOURNAL OF EARTH SCIENCES 29, no. 7 (November 16, 2020): 1125–53. http://dx.doi.org/10.3906/yer-2006-11.
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The production of Cu-Zn from volcanogenic massive sulfide (VMS) deposits in the eastern Pontides began in the early 1900s, with the exploitation of high-grade ores scattered across the district. The district still possesses economically important blind VMS and associated sulfide deposits. Careful descriptive documentation of the typical features of these VMS ores illustrated the geological characteristics that are important in identifying ore localities and can be used to define exploration targets. The eastern Pontide VMS deposits are examples of volcanic-hosted massive sulfide deposits that exhibit many of the characteristics typical of bimodal-felsic- type VMS mineralization. Nearly all known VMS deposits in the region are hosted by the Kızılkaya Formation, which is characterized by Late Cretaceous dacitic/rhyolitic volcanic rocks that are typically located at the top contact of the dacitic/rhyolitic pile or within the lower part of the overlying polymodal sequence containing various proportions of volcanic and sedimentary facies. Most VMS deposits are composed of a mound of high-grade massive sulfides formed above a zone of lower-grade stringer veins and disseminated mineralization. The dominant sulfide minerals in most deposits are pyrite, chalcopyrite, and sphalerite. Au also occurs in some deposits. The hydrothermal ore facies are diagnostic of subaqueous emplacement of the Pontide massive sulfide deposits that were deposited on the Cretaceous ocean floor. The immediate host lithologies associated with VMS mineralization have typically experienced intense and widespread alteration. The trace element geochemical signatures of the host rocks indicated that the Pontide VMS deposits likely formed in an extensional tectonic regime during subduction. Major lineaments and circular structures exerted fundamental controls on the locations of the VMS deposits in the eastern Pontide district. Age determinations indicated that almost all of the deposits in this region formed in a restricted time interval between ca. 91.1 and 82 Ma. The sulfur isotope compositions of the ore-forming fluids were consistent with those of fluids derived from modified seawater.
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Strmic Palinkas, Sabina, Trond Fjellet, Håvard Hallås Stubseid, Xuan Liu, Jorge Enrique Spangenberg, Andrea Čobić, and Rolf Birger Pedersen. "Trace Element and Sulfur Isotope Signatures of Volcanogenic Massive Sulfide (VMS) Mineralization: A Case Study from the Sunnhordland Area in SW Norway." Minerals 14, no. 4 (April 7, 2024): 384. http://dx.doi.org/10.3390/min14040384.
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The Sunnhordland area in SW Norway hosts more than 100 known mineral occurrences, mostly of volcanogenic massive sulfide (VMS) and orogeny Au types. The VMS mineralization is hosted by plutonic, volcanic and sedimentary lithologies of the Lower Ordovician ophiolitic complexes. This study presents new trace element and δ34S data from VMS deposits hosted by gabbro and basalt of the Lykling Ophiolite Complex and organic-rich sediments of the Langevåg Group. The Alsvågen gabbro-hosted VMS mineralization exhibits a significant Cu content (1.2 to >10 wt.%), with chalcopyrite and cubanite being the main Cu-bearing minerals. The enrichment of pyrite in Co, Se, and Te and the high Se/As and Se/Tl ratios indicate elevated formation temperatures, while the high Se/S ratio indicates a contribution of magmatic volatiles. The δ34S values of the sulfide phases also support a substantial influx of magmatic sulfur. Chalcopyrite from the Alsvågen VMS mineralization shows significant enrichment in Se, Ag, Zn, Cd and In, while pyrrhotite concentrates Ni and Co. The Lindøya basalt-hosted VMS mineralization consists mainly of pyrite and pyrrhotite. Pyrite is enriched in As, Mn, Pb, Sb, V, and Tl. The δ34S values of sulfides and the Se/S ratio in pyrite suggest that sulfur was predominantly sourced from the host basalt. The Litlabø sediment-hosted VMS mineralization is also dominated by pyrite and pyrrhotite. Pyrite is enriched in As, Mn, Pb, Sb, V and Tl. The δ34S values, which range from −19.7 to −15.7 ‰ VCDT, point to the bacterial reduction of marine sulfate as the main source of sulfur. Trace element characteristics of pyrite, especially the Tl, Sb, Se, As, Co and Ni concentrations, together with their mutual ratios, provide a solid basis for distinguishing gabbro-hosted VMS mineralization from basalt- and sediment-hosted types of VMS mineralization in the study area. The distinctive trace element features of pyrite, in conjunction with its sulfur isotope signature, have been identified as a robust tool for the discrimination of gabbro-, basalt- and sediment-hosted VMS mineralization.
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Tijerina, Alexandra, Yamile Barrera, Elizabeth Solis-Pérez, Rogelio Salas, José L. Jasso, Verónica López, Erik Ramírez, Rosario Pastor, Josep A. Tur, and Cristina Bouzas. "Nutritional Risk Factors Associated with Vasomotor Symptoms in Women Aged 40–65 Years." Nutrients 14, no. 13 (June 22, 2022): 2587. http://dx.doi.org/10.3390/nu14132587.
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Vasomotor symptoms (VMS) are the most common symptoms among menopausal women; these include hot flashes and night sweats, and palpitations often occur along with hot flashes. Some studies in Mexico reported that around 50% of women presented with VMS mainly in the menopausal transition. It has been proven that VMS are not only triggered by an estrogen deficiency, but also by nutritional risk factors. Evidence of an association between nutritional risk factors and VMS is limited in Mexican women. The aim of this study is to identify nutritional risk factors associated with VMS in women aged 40–65 years. This is a comparative cross-sectional study, undertaken in a retrospective way. A sample group (n = 406 women) was divided into four stages according to STRAW+10 (Stages of Reproductive Aging Workshop): late reproductive, menopausal transition, early postmenopause, and late postmenopause. Hot flashes were present mainly in the early postmenopause stage (38.1%, p ≤ 0.001). Two or more VMS were reported in 23.2% of women in the menopausal transition stage and 29.3% in the early postmenopause stage (p < 0.001). The presence of VMS was associated with different nutritional risk factors (weight, fasting glucose levels, cardiorespiratory fitness, and tobacco use) in women living in the northeast of Mexico.
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Liu, Kangkai, Linhan Guo, Yu Wang, and Xianyu Chen. "Timely Reliability Analysis of Virtual Machines Considering Migration and Recovery in an Edge Server." Sensors 21, no. 1 (December 25, 2020): 93. http://dx.doi.org/10.3390/s21010093.
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For the edge computing network, whether the end-to-end delay satisfies the delay constraint of the task is critical, especially for delay-sensitive tasks. Virtual machine (VM) migration improves the robustness of the network, whereas it also causes service downtime and increases the end-to-end delay. To study the influence of failure, migration, and recovery of VMs, we define three states for the VMs in an edge server and build a continuous-time Markov chain (CTMC). Then, we develop a matrix-geometric method and a first passage time method to obtain the VMs timely reliability (VTR) and the end-to-end timely reliability (ETR). The numerical results are verified by simulation based on OMNeT++. Results show that VTR is a monotonic function of the migration rate and the number of VMs. However, in some cases, the increase in task VMs (TVMs) may conversely decrease VTR, since more TVMs also brings about more failures in a given time. Moreover, we find that there is a trade-off between TVMs and backup VMs (BVMs) when the total number of VMs is limited. Our findings may shed light on understanding the impact of VM migration on end-to-end delay and designing a more reliable edge computing network for delay-sensitive applications.
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Kwon, Ria, Yoosoo Chang, Yejin Kim, Yoosun Cho, Hye Rin Choi, Ga-Young Lim, Jeonggyu Kang, et al. "Alcohol Consumption Patterns and Risk of Early-Onset Vasomotor Symptoms in Premenopausal Women." Nutrients 14, no. 11 (May 29, 2022): 2276. http://dx.doi.org/10.3390/nu14112276.
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The role of alcohol consumption in the risk of vasomotor symptoms (VMS), the most cardinal climacteric symptoms, is not well established. We examined their relationship with early-onset VMS among premenopausal women. Moderately-to-severely bothersome VMS, the primary outcome, was assessed using the Korean version of the Menopause-Specific Quality of Life questionnaire. The alcohol consumption categories included lifetime abstainer, former drinker, or current drinker, categorized as light, moderate, heavy, and very heavy. Compared with the lifetime-abstinence (reference), the multivariable-adjusted odds ratio (95% CIs) for prevalent VMS in alcohol consumption of <10, 10–19, 20–39, and ≥40 g/day were 1.42 (1.02–1.99), 1.99 (1.27–3.12), 2.06 (1.19–3.57), and 3.52 (1.72–7.20), respectively (p trend <0.01). Compared with the lifetime-abstinence, the multivariable-adjusted hazard ratios (95% CIs) for incident bothersome VMS among average alcohol consumption of <10, 10–19, 20–39, and ≥40 g/day were 1.10 (0.85–1.41), 1.03 (0.70–1.51), 1.72 (1.06–2.78), and 2.22 (1.16–4.23), respectively (p trend = 0.02). Increased alcohol consumption positively and consistently showed a relationship with increased risk of both prevalent and incident early-onset VMS. Refraining from alcohol consumption may help prevent bothersome VMS in premenopausal women.
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Pascual, Emilio, Teodosio Donaire, Manuel Toscano, Gloria Macías, Christian Pin, and Michael Hamilton. "Geochemical and Volcanological Criteria in Assessing the Links between Volcanism and VMS Deposits: A Case on the Iberian Pyrite Belt, Spain." Minerals 11, no. 8 (July 30, 2021): 826. http://dx.doi.org/10.3390/min11080826.
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VMS deposits in the Iberian Pyrite Belt (IPB), Spain and Portugal, constitute the largest accumulation of these deposits on Earth. Although several factors account for their genetic interpretation, a link between volcanism and mineralization is generally accepted. In many VMS districts, research is focused on the geochemical discrimination between barren and fertile volcanic rocks, these latter being a proxy of VMS mineralization. Additionally, the volcanological study of igneous successions sheds light on the environment at which volcanic rocks were emplaced, showing an emplacement depth consistent with that required for VMS formation. We describe a case on the El Almendro–Villanueva de los Castillejos (EAVC) succession, Spanish IPB, where abundant felsic volcanic rocks occur. According to the available evidence, their geochemical features, εNd signature and U–Pb dates suggest a possible link to VMS deposits. However, (paleo)volcanological evidence here indicates pyroclastic emplacement in a shallow water environment. We infer that such a shallow environment precluded VMS generation, a conclusion that is consistent with the absence of massive deposits all along this area. We also show that this interpretation lends additional support to previous models of the whole IPB, suggesting that compartmentalization of the belt had a major role in determining the sites of VMS deposition.
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Holly, Brian P., Yuval A. Patel, James Park, Laura M. Fayad, E. Gene Deune, Sally E. Mitchell, and Clifford R. Weiss. "Preoperative Epoxy Embolization Facilitates the Safe and Effective Resection of Venous Malformations in the Hand and Forearm." HAND 12, no. 4 (September 16, 2016): 335–41. http://dx.doi.org/10.1177/1558944716669798.
Full textAbstract:
Background: The standard of care for treatment of low-flow venous malformations (VMs) is percutaneous sclerotherapy. These lesions are seldom surgically resected, especially if the malformation is in an anatomically difficult location. Percutaneous sclerotherapy is safe and effective. However, the drawbacks to sclerotherapy are the need for repeated treatments and risks of skin ulceration, deep venous thrombosis, scarring/contractures, and nerve damage. Surgical resection can be difficult because of intraoperative bleeding, intraoperative lesional decompression, and difficulty in localization. Methods: We describe our initial experience with 11 patients who underwent surgical resection of VMs located in the hand and forearm after preembolization of 27 total sites using n-butyl-cyanoacrylate or ethylene vinyl alcohol copolymer. Results: Of the 11 patients treated, 5 had focal VMs, 3 had multifocal VMs, and 3 had diffuse VMs throughout the affected extremity. Four of the 5 patients with focal VMs were followed for at least 1 year, and no further treatment was required. All 3 of the patients with diffuse VMs have required ongoing treatment. No major functional impairments were reported, and there were no major procedure-related complications. Conclusions: Overall, embolization of the malformation before surgical resection facilitated localization, demarcation, and removal of the lesion.
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Roop, John Paul. "A Proper-Orthogonal Decomposition Variational Multiscale Approximation Method for a Generalized Oseen Problem." Advances in Numerical Analysis 2013 (December 18, 2013): 1–8. http://dx.doi.org/10.1155/2013/974284.
Full textAbstract:
We introduce the variational multiscale (VMS) stabilization for the reduced-order modeling of incompressible flows. It is well known that the proper orthogonal decomposition (POD) technique in reduced-order modeling experiences numerical instability when applied to complex flow problems. In this case a POD discretization naturally separates out structures which corresponding to the energy cascade on large and small scales, in order, a VMS approach is natural. In this paper, we provide the mathematical background necessary for implementing VMS to a POD-Galerkin model of a generalized Oseen problem. We provide theoretical evidence which indicates the consistency of utilizing a VMS approach in the stabilization of reduced order flows. In addition we provide numerical experiments indicating that VMS improves fidelity in reproducing the qualitative properties of the flow.
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Nakajima, Hideaki, Hiroshi Nouso, Naoto Urushihara, Koji Fukumoto, Masaya Yamoto, Hiromu Miyake, Akinori Sekioka, Akiyoshi Nomura, and Yutaka Yamada. "Blue Rubber Bleb Nevus Syndrome with Long-Term Follow-Up: A Case Report and Review of the Literature." Case Reports in Gastrointestinal Medicine 2018 (November 25, 2018): 1–7. http://dx.doi.org/10.1155/2018/8087659.
Full textAbstract:
Blue rubber bleb nevus syndrome (BRBNS) is a rare disease in which venous malformations (VMs) involve any body organ, most commonly the skin and the gastrointestinal (GI) tract. Treatment of BRBNS aims at preserving the GI tract as much as possible. Although there are several dozen case reports about BRBNS that describe short-term clinical courses, a few provide an account of long-term clinical course. Here, we report a case of BRBNS in a girl that required multiple abdominal surgeries due to the GI VMs and a recurrence at an interval of 14 years. The preferred approach for gastrointestinal VMs involves the complete resection of all lesions without residual VMs. It is important to bear in mind the possibility of delayed recurrence of GI VMs after surgical or endoscopic treatment.
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Wibowo, F. C., W. T. Priane, D. R. Darman, Y. Guntara, and N. J. Ahmad. "Dissemination of Virtual Microscopic Simulation (VMS) to Sparking in STEM for Facilitating 21st - Century Skills (21-CS)." Journal of Physics: Conference Series 2377, no. 1 (November 1, 2022): 012074. http://dx.doi.org/10.1088/1742-6596/2377/1/012074.
Full textAbstract:
This study of the dissemination of Virtual Microscopic Simulation (VMS) to Sparking Innovation in STEM Education for Facilitating 21st-Century Skills (21-CS). The method applied to present work principles and critical parts of Virtual Microscopic Simulation (VMS) Media Education is a mixture of informative and utilizing the Interactive Lecture Demonstration (ILD) method. The number sample of participants of 41 physics teachers with VMS. The results showed that the 21-CS skills questionnaire of teachers and students’ perceptions of their understanding of 21st-century skills. These results can reveal that VMS with a STEM approach provides a positive relationship to practice 21st-century skills for teachers. Based on these results, the simple impact is when teachers have strong perceptions about problem-solving, critical thinking, collaboration, communication, and creativity, through STEM and VMS media.
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Macey, Paul M., Christopher A. Richard, David M. Rector, Rebecca K. Harper, and Ronald M. Harper. "State influences on ventral medullary surface and physiological responses to sodium cyanide challenges." Journal of Applied Physiology 89, no. 5 (November 1, 2000): 1919–27. http://dx.doi.org/10.1152/jappl.2000.89.5.1919.
Full textAbstract:
Intravenous sodium cyanide (NaCN) administration lowers ventral medullary surface (VMS) activity in anesthetized cats. Sleep states modify spontaneous and blood pressure-evoked VMS activity and may alter VMS responses to chemoreceptor input. We studied VMS activation during peripheral chemoreceptor stimulation by intravenous NaCN using optical procedures in six cats instrumented for recording sleep physiology during sham saline and control site trials. Images of scattered 660-nm light were collected at 50 frames/s with an optical device after 80–100 μg total bolus intravenous NaCN delivery during waking and sleep states. Cyanide elicited an initial ventilatory decline, followed by large inspiratory efforts and an increase in respiratory rate, except in rapid eye movement sleep, in which an initial breathing increase occurred. NaCN evoked a pronounced decrease in VMS activity in all states; control sites and sham injections showed little effect. The activity decline was faster in rapid eye movement sleep, and the activity nadir occurred later in waking. Sleep states alter the time course but not the extent of decline in VMS activity.