Miracle-dz/UniFAR-FTUs huggingface dataset:
Usages of Semantic Web Services Technologies in IoT Ecosystems and its Impact in Services Delivery: A survey

Internet of things (IoT) has begun to emerge in our daily life through the huge number of smart services provided by the devices that deploy around us. Vague and uncertainty in attributes that using in describing services, different levels of quality of each service and the limitation in capabilities of IoT devices are affect and hinder the process of discovering or selecting services. The services in IoT need to be well described to enable users to receive their services that relevant to their query. This survey will investigate the most popular semantic services models and explore the use of these models in enhancing services discovery and services selection in IoT domain. Furthermore, the survey will investigate the evaluation metrics used by each study and compare the results that they obtained.
A Secure Protocol in Smart Metering Networks Based on the Internet of Things

—In this paper, a secure chord protocol based method is presented to improve the latency and system storage requirements in smart metering. In the proposed approach, a secure multi-mode computation method is utilized which can reduce the time of data exchange and memory consumption, by maintaining data security and subscriber's privacy. This method can be utilized in smart metering networks based on the internet of things (IoT). According to the simulated results, the proposed method incremented the amount of production capacity by 26% compared to the reference model. Also, the average time to complete the data collection reduced by 65.5%, and the package delivery ratio of the proposed model incremented by 14.4 % in comparison with the reference model. Also, a secure mechanism-based lightweight authentication was provided. This scheme needs half memory usage versus other security plans such as the EDAS algorithms .
OXIDATION OF 1-METHYLNAPHTHALENE AT 1–13 ATM: EXPERIMENTAL STUDY IN A JSR AND DETAILED CHEMICAL KINETIC MODELING

Abstract The kinetics of oxidation of 1-methylnaphthalene have been studied in a jet stirred reactor (800 ≤ T/K ≤ 1421, 1 ≤ P/atm ≤ 10, 0.5 ≤ equivalence ratio ≤ 1.5). Molecular species concentration profiles of reactants, stable intermediates and final products were measured by sonic probe sampling followed by on-line GC-MS analyses and off-line GC-TCD-FID and GC-MS analyses. The oxidation of 1-methylnaphthalene was modeled using a detailed chemical kinetic reaction mechanism (146 species and 1041 reactions, most of them reversible). The proposed kinetic scheme was also validated simulating ignition delay times of 1-methylnaphthalene/air mixtures taken from the literature. Sensitivity analyses were performed and reaction path analyses, based on rates of reaction, were used to interpret the results.
Identification of Fake Profiles in Twitter Social Network

— Online social networks are being intensively used by millions of users, Twitter being one of the most popular, as a powerful source of information with impact on opinion and decision making. However, in Twitter as in other online social networks, not all the users are legitimate, and it is not easy to detect those accounts that correspond to fake profiles. In this work in progress paper, we propose a method to help practitioners to identify fake Twitter accounts, by calculating the “fake probability” based on a weighted parameter set collected from public Twitter accounts. The preliminary results obtained with a subset of an existing annotated dataset of Twitter accounts are promising and give confidence on using this method as a decision support system, to help practitioners to identify fake profiles.
The breakdown mechanism of a mid-plane triggered spark gap trigatron

A mid-plane triggered spark gap trigatron prototype with adjustable main gap distance and replaceable trigger electrode was constructed and experimentally investigated. The electric parameter measurements, the luminosity measurements and the streak image converter camera were used to study the breakdown mechanism. Electric field distribution in the gap was calculated for the trigatron static and dynamic conditions. The experimental results and analysis show that the space charge around the trigger electrode plays an important role in the breakdown process. Because of the ultra violet irradiation and the existing discharge channel of the first gap segment breakdown, the second gap segment breakdown is much faster. For a mid-plane triggered spark gap trigatron, the optimization of the electric field distribution under dynamic condition can increase the dynamic triggering range appreciably.
Internal Hernia Repair as an Emergency after Primary and Revisional Bariatric Surgery: Results from a High-Volume Referral Center

Background: Reduction and closure of internal hernia has become a frequent emergency bariatric procedure at high-volume centers to treat complications after primary and revisional bariatric surgery. Methods: A retrospective chart review with IRB approval was conducted on 61 emergency bariatric surgery cases performed by a single surgeon at an accredited MBSAQIP high-volume bariatric center and community hospital from August 2018 to February 2020. A subgroup analysis of 34 internal hernia repairs after a prior primary or revisional bariatric operation was conducted with measurement of primary outcomes (30-day morbidity and mortality) and secondary outcomes (concomitant adhesiolysis and small bowel resection, length of stay, recurrence and need for reoperation, among others). Results: All patients (n=34) underwent an emergency repair of internal hernia after prior primary or revised Roux en Y gastric bypass (91.2%) and classic duodenal switch (8.8%). Most of them were female (85.3%), and the mean age was 49.3 ± 12.9 years. Almost all surgeries (97.1%) started laparoscopically, with a rate of conversion to open of 14.7%. There was no mortality, and the 30-day morbidity was 29.4%. The mean follow-up duration was 5.8 ± 5.4 months, and the median ASA class was 3. Adhesiolysis was performed in 76.5% of cases, while the rate of concomitant small bowel resection was 8.8%. A subsequent repair of internal hernia was performed in 26.5% of cases. Among the gastric bypass internal hernias, the most common configuration was retrocolic-retrogastric (61.8%), with a jejunojejunostomy mesenteric defect being the most common site of herniation (55.9%). A CT abdomen/pelvis was obtained in 100% of cases to make a definitive diagnosis, and all patients were taken to operating room within 4 hours of presentation. Conclusion: Emergency repair of internal hernia can be safely performed at a high-volume center and community hospital environment with the laparoscopic approach and with no mortality, although the 30-day morbidity can be significant. A prior Roux en Y gastric bypass is the most common indication, with the retrocolic-retrogastric anatomy and the jejunojejunostomy mesenteric defect as the most frequent configuration and site, respectively.
Atomistic Simulation Study of Mixed-Metal Oxide (LiNi1/3Co1/3Mn1/3O2) Cathode Material for Lithium Ion Battery

Using atomistic simulation with empirical potential parameters, a layered metal oxide (LiNi1/3Co1/3Mn1/3O2) as cathode material for lithium ion battery is investigated in terms of energetics and dynamics. Structural characteristics, defect chemistry, and doping effects are determined by atomistic energetics calculation, which has been developed by Islam et al., while dynamics properties are characterized by molecular dynamics simulation. The core–shell model with empirical force fields reproduced the unit-cell parameters, which are well matched with the experimental data. With regard to the intrinsic defects, the calculated results indicate that the antisite defect, in which Li+ and Ni2+ exchange positions, is most favorable. In the isovalent doped systems, the solution energy increases with increasing disparity in size between dopant and host ion. In addition, it is found that ions become more mobile due to growing thermal motions with increasing temperature and the local mobility is anisotropic.
Development and evaluation of a mucoadhesive nasal gel of midazolam prepared with Linum usitatissimum L. seed mucilage.

The aim of the present study was to prepare mucoadhesive nasal gels from mucilage isolated from seeds of Linum usitatissimum L. containing midazolam hydrochloride. Characterization of the isolated mucoadhesive agent was carried out, including determination of pH, swelling property, viscosity and mucoadhesive strength. The results were compared with synthetic polymers (HPMC and carbopol 934). Nasal gels of midazolam were prepared with and without enhancers and the permeation study was carried out using excised goat nasal mucosa. Permeation profiles were evaluated and histological study of nasal mucosae before and after permeation study was also conducted to determine histological change, if any.
Factors Contributing to Work-Related Absenteeism during the COVID-19 Pandemic

Abstract Workplace absenteeism is a complex issue that can be caused by various factors which include job dissatisfaction, organizational environment, or personal problems. The study aims to create a brief profile of absenteeism in companies operating in Iasi in the context of the coronavirus pandemic. A quantitative study was conducted to shape the profile of absenteeism, using descriptive statistics and correlation analysis. Findings revealed that employees working in Iasi are prone to absent as a result of attitudinal factors, in particular, autonomy linked to decision making. Organizational factors did not have a significant contribution regarding absenteeism because managers offered support when employees faced difficulties. Working for a living was the personal factor that stood out; this thing being mainly influenced by the current pandemic period. The stress of being laid off or displaced led many employees to ignore professional development. COVID-19 influenced the employees’ decision to miss a workday, the fear of getting infected, or the stress related to the pandemic outlined a behavior known as presenteeism or digital absenteeism for those that worked from home. Implementing social distancing rules prevented physical absenteeism, employees perceived the workplace as a safe environment.
Structure and properties of the mesophase of syndiotactic polystyrene. II. Effect of stepwise extraction on the preparation of the mesophase

In this study, a novel stepwise extraction method has been examined. The guest molecules housed between the helices of the clathrate δ form of syndiotactic polystyrene can be removed completely with this method. A systematic study of the preparation of a solvent-free mesophase (emptied clathrate) membrane, its helical and residual solvent contents, and its structural transformations has been performed. In this first attempt, an enhancement in the TTGG helical content has been observed in the extracted membrane, and a conceptual mechanism is proposed. © 2002 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 269–273, 2003
From chemotaxis to infotaxis: stop and smell the roses!

Many animals use odour gradients to find resources, locate mates, or avoid predators (Murlis et al. 1992). Much of chemical ecology has been directed towards understanding the mechanisms by which animals exploit these odour signals. One of the central tenets of such studies has been that the exploitation of odour can be understood (at least very broadly) in terms of chemotaxis the ability to navigate relative to the source of the odour, either up or down a chemical concentration gradient (Vickers 2000). Ironically, however, prior to the publication of an important new study by Vergassola et al. (2007), there has been no single, generalised mechanism by which chemosensory perception alone might explain navigation to an odour source in macroscopic animals. Instead, many, if not most, macroscopic animals appear to require supplementary sensory input from either flow characteristics of the medium, or visual reference points, in addition to odour signals. By contrast, ‘pure’ chemotaxis was thought to be restricted to situations in which there is a stable local concentration gradient of chemicals driven solely by molecular diffusion, such as might be experienced by bacteria (e.g., Blackburn et al. 1998) or by sea urchin sperm encountering an egg (Kaupp et al. 2003), for example. The inability of chemotaxis to explain odour navigation in animals is thought to be because stable odour concentration gradients are rarely encountered at the spatial scales at which most macroscopic animals perceive the environment. Instead, odour signals typically decay rapidly (often exponentially) with distance from the source and are broken up into intermittent ‘filaments’ by fluid turbulence, rather than being distributed as an idealised smooth gradient (Fig. 1). Because of the complex dynamics of turbulence (Shraiman & Siggia 2000, Balkovsky & Shraiman 2002), the detection of individual odour filaments under dilute conditions may be extremely infrequent, and therefore hard to track. For instance, even in the centre of an odour plume the signal may be absent up to 90% of the time (Murlis et al. 1992, Vickers 2000). Moreover, at the very localised scale at which an individual odour filaments is detected, the filament may be perceived to be moving in an entirely different direction to the average flow of the medium (Fig. 1). Consequently, it has remained unclear how chemotaxis alone might explain odour tracking under dilute conditions.
Effects of the application of carbonaceous adsorbents on pumpkin (Cucurbita maxima) uptake of heptachlor epoxide in soil

Abstract The use of heptachlor, a cyclodiene-type insecticide, has been banned since the 1970s because of its carcinogenic potential. However, its metabolite, heptachlor exo-epoxide (HEPX), has still been detected in the fruit of cucurbits produced in some areas. It is important to reduce the daily intake of HEPX contained in food. To address this issue, the effects of carbonaceous adsorbents on the uptake of HEPX from the soil by Cucurbita maxima Dutch. (winter squash) were investigated. Amorphous organic carbons, such as peat moss and wood chips, did not affect the concentration of HEPX in the soil solution or the amount present in the shoots. In contrast, relatively condensed carbon, such as activated carbons, decreased the concentration of HEPX in the soil solution and in the shoots. The uptake amount in the shoot was closely correlated with the concentration of HEPX in the soil solution, which suggests that its uptake by C. maxima depends on its concentration in the soil solution. Activated carbons did not affect the growth of C. maxima. Therefore, the application of activated carbon to soil contaminated with HEPX appears to be an effective method of reducing the uptake of HEPX by C. maxima.
Improvement of the Photo-Bias Stability of Zn-Sn-O Field effect Transistors by an Ozone Treatment

Improvement of the Photo-bias Stability of the Zn-Sn-O Field Effect Transistors by an Ozone Treatment Bong Seob Yang, Sanghyun Park, Seungha Oh, Yoon Jang Kim, 1 Jae Kyeong Jeong,* Cheol Seong Hwang, and Hyeong Joon Kim* 1 WCU Hybrid Materials Program, Department of Materials Science and Engineering, and Inter-university Semiconductor Research Center, Seoul National University, Seoul 151-744, Korea
Diffusion in buffered protein solutions: combined Nernst–Planck and multicomponent Fick equations

The Taylor dispersion method has been used to measure diffusion in aqueous solutions of bovine serum albumin (BSA) buffered with H3PO4–KH2PO4(pH 2.2), KH2citrate–K2Hcitrate (pH 4.5), or K2Hcitrate–K3citrate (pH 5.8). Analysis of the refractive-index profiles across the eluted solute peaks shows that diffusing BSA produces large coupled flows of the buffer electrolytes. In the 0.100 mol dm–3 H3PO4–0.100 mol dm–3 KH2PO4 buffer, for example, each mole of BSA counter-transports 1500 mol H3PO4 and co-transports 850 mol KH2PO4. Nernst–Planck and multicomponent Fick equations are used to show that the coupled flows of the buffer electrolytes are driven by the electric field which is generated by the diffusion of BSA and its counterions. Counterintuitively, coupled diffusion is not eliminated by using high concentrations of supporting electrolytes.
Synthesis and electrochemical applications of nitrogen-doped carbon nanomaterials

Abstract Nitrogen doping is an effective way to tailor the properties of the shaped carbon materials, including the nanotubes, nanocups, nanofibers, as well as the nanorods, and render their potential use for various applications. The common bonding configurations obtained on the N insertion is the pyridinic N and pyrrolic N, which impart the characteristic properties to these carbon materials. This review will focus on the nitrogen-doped carbon materials, the doping effect on the electrochemistry of the doped nanomaterials, and the various synthetic methods to introduce N into the carbon network. The potential applications of the N-doped materials are also reviewed on the basis of the experimental and theoretical studies in electrochemistry.
Exploring leadership in Facebook communities: personality traits and activities

Leaders of online communities are today becoming key players in social media sites like Facebook. Responsible for the community's participation rules, limits and members’ identities, these leaders represent an important population on which to focus. This paper compares 94 Facebook community leaders to 94 other Internet users (N=188) in order to identify differences among them with respect to five major personality traits ("the BIG 5") as well as their online and offline activities. The results of the online surveys show that Facebook community leaders are more extroverted, open to experience, emotionally stable and active online and offline than are other Internet users. Examining the community categories, the leaders who manage Facebook support communities were found to be more introverted and less active online than leaders of other community types. The results are discussed in the context of the unique role of online leadership in the social media environment.
Auditor Effect on Merger and Acquisition Outcomes: Evidence from Targets' Auditor-Provided Nonaudit Services

We study the role of auditors in the market for corporate control by examining the relation between nonaudit services (NAS)-related auditor independence and acquisition outcomes. We find that a target's NAS purchases from its incumbent auditor are associated with a lower deal premium, more time and effort taken for due diligence verification, and a higher likelihood of using stock as a method of payment. These relations are more pronounced in situations where the target is more incentivized to manage earnings and the auditor face less risk to acquiesce to client pressure. We also find a negative relation between the target's NAS purchases and the actual deal quality measured by post-acquisition divestiture and goodwill impairment. Overall, our evidence indicates that audit quality affects multiple aspects of an acquisition deal and that the NAS provision compromises auditor independence both in appearance and in fact. JEL Classification: M42; G34
An exhaustive research and analysis on seismic performance of prefabricated concrete shear wall structure

In order to accelerate the process of building industrialization, improve the overall stability and construction quality of the building. In this paper, a bolted connection method is designed to study the seismic performance of the composite concrete shear wall specimens with horizontal split joints from the aspects of bearing capacity, ductility, energy dissipation, deformation capacity and failure mode. The test results show that the bolted concrete shear wall is feasible and the connectors can effectively connect the upper and lower precast shear walls to form a whole with certain lateral stiffness. The energy dissipation capacity of the specimens is similar to that of other prefabricated concrete shear wall structures with “self-reduction”. The displacement Angle is greater than 1/120 of the limit value of the displacement Angle between elastic-plastic layers under the action of large earthquakes, and the specimen has good deformation capacity. The energy dissipation capacity of the structure from dynamics perspective reveals that smaller capacity of the specimen by providing energy dissipation factor E 0.24 and equivalent viscous damping coefficient of 0.038.
Foot-and-Mouth Disease Virus Evades Innate Immune Response by 3C-Targeting of MDA5

Foot-and-mouth disease (FMD) is a highly contagious disease caused by FMD virus (FMDV) in cloven-hoofed animals. Retinoic acid-inducible gene I (RIG-I) and melanoma differentiation-associated gene 5 (MDA5) are representative receptors in the cytoplasm for the detection of viral RNA and trigger antiviral responses, leading to the production of type I interferon. Although MDA5 is a crucial receptor for sensing picornavirus RNA, the interplay between MDA5 and FMDV is relatively unknown compared to the interplay between RIG-I and FMDV. Here, we observed that the FMDV infection inhibits MDA5 protein expression. Of the non-structural proteins, the Lb and 3C proteinases (Lbpro and 3Cpro) were identified to be primarily responsible for this inhibition. However, the inhibition by 3Cpro was independent of proteasome, lysosome and caspase-dependent pathway and was by 3C protease activity. A direct interaction between 3Cpro and MDA5 protein was observed. In conclusion, this is the first report that 3Cpro inhibits MDA5 protein expression as a mechanism to evade the innate immune response during FMDV infection. These results elucidate the pathogenesis of FMDV and provide fundamental insights for the development of a novel vaccine or therapeutic agent.
Photochemistry, mixing and diurnal cycles in the upper ocean

The interplay between ocean photochemistry and surface boundary-layer physics is explored in a range of analytical and numerical process models. For simple systems, key attributes of the photochemical distribution-diurnal cycle, surface concentration, and the bulk concentration difference across the mixed layer-can be expressed in terms of a small number of physical (vertical diffusivity) and photochemical (turnover timescale and production depth scale) scaling factors. A coupled, 1-D photochemical/physical model is used to examine the more general case with finite mixing rates, variable photochemical production and evolving boundary layer depth. Finite boundary layer mixing rates act to increase both the diurnal cycle and mean concentration at the surface. The diurnal cycle and mean surface concentration are further amplified by coupling between photochemistry and diurnal physics. The daily heating/cooling cycle of the upper ocean can lead to a significant reduction in mixing and boundary-layer depth during the day when photochemical production is at a maximum. Accounting for these effects results in additional surface trapping of photochemically produced species and significant enhancements of the surface diurnal cycle and daily mean. The implications of our model results for field data interpretation and global air-sea flux calculations are also discussed.