Miracle-dz/UniFAR-FTUs huggingface dataset:
An Effective Security Method Based on Combining 802.1x, DMZ and SSL-VPN for IoT Network Security

IoT uygulamalari, sahip olduklari esnek yapilari ve sagladiklari bircok avantajdan dolayi bircok alanda karsimiza cikmaktadirlar. IoT uygulamalarindaki artis, bircok guvenlik acigini da getirmektedir. Bu guvenlik aciklarini kapatmak ve olusturulan sistemin guvenligini saglamak icin mevcut teknolojiler, yeni teknolojilerle birlestirilerek bazi onlemler alinmalidir. Bu calismada, IoT uygulama aginin guvenligini saglamak icin, cesitli guvenlik teknolojilerini bir arada kullanan bir yontem onerilmistir. Buna gore, kablosuz sensor cihazlarinin, Wi-Fi agina baglanmasi icin 802.1x teknolojisini kullanildi. Boylelikle, ilk adimda yetkisiz kullanicilarin bu aga baglanmasina izin verilmez. Ikinci adimda IoT verileri merkezi bir sunucu uzerinde toplanmis ve bu sunucu guvenlik duvarindaki DMZ bolgesine alinmistir. Boylece, sunucuya erisim hem kisitlanir hem de sunucu erisimlerinin gunlugu tutulur. Son adimda, guvenlik duvarinda konfigure edilen SSL-VPN ile dis ortamdan verilerin guvenli bir sekilde izlenmesi saglanmistir. Onerilen yaklasimin en buyuk avantajlari, mevcut Wi-Fi aglarinda rahatlikla kullanilabilir olmasi, haberlesme guvenligini saglamasi ve dusuk maliyetli olmasidir. Bu avantajlari goz onunde bulunduruldugunda, IoT ag guvenligi alaninda onemli bir calisma oldugu dusunulmektedir.
Testing a model of turnover intention: Lecturers at the University of Namibia

Orientation: Institutions of higher learning lose talented academics to other educational institutions or organisations within Namibia and other countries. In order for higher educational institutions to achieve academic excellence, they need competent and satisfied lecturers.Research purpose: This study investigates the relationship between basic psychological need satisfaction, organisational commitment, job embeddedness, work engagement and turnover intention of lecturing staff.Motivation for the study: Academic institutions neglect to facilitate changes with the needed support, impacting negatively lecturers’ work-related attitudes and their intention to stay.Research approach/design and method: A questionnaire was used to collect the data, and estimates of reliability, confirmatory factor analyses, goodness-of-fit statistics, Pearson’s product–moment correlation and structural equation modelling (SEM) were applied to analyse the data (n = 242). Main findings: Using SEM, four different paths were found in the model, which explained how the variables collectively impact turnover intention.Practical/managerial implications: Lecturers should be included in decision-making, should work in a pleasant working environment and be given training opportunities to develop. In order to ensure that institutions reach their goals, job satisfaction needs to be assessed regularly to ensure that lecturers are satisfied, committed and willing to contribute to the success of the organisation.Contribution/value-add: This study will add to the knowledge within Industrial/Organisational Psychology and guide interventions to retain lecturing staff at Namibian institutions of higher learning.
Diversity, Abundance, and Distribution Patterns of Natural Enemy Insects on Chili (Capsicum annum L.) in Bincau Village, Banjar Regency, South Kalimantan

Chili is a widely cultivated plant by the community because of its profit. Currently, in maintaining the quality of chili, people commonly use a lot of pesticides. In contrast, naturally, there are biological agents in the shape of natural enemy insects, more effective, and environmentally friendly. This study aims to determine the diversity, abundance, and distribution patterns of natural enemy insects in chili plantation (Capsicum annum L.) at Bincau Village, Martapura District, Banjar Regency, South Kalimantan. The sample is collected by pitfall trap, yellow pan trap, and sweep net method. Obtained data are analyzed by Shannon Wienner index (H'), Meyer abundance index, Morisita index (Id), and PCA method for environmental parameter analysis. The results showed the diversity of natural enemy insects on chili plants was moderate (H' = 2.396). Furthermore, the highest abundance in research is demonstrated on Hymenoptera order, which consisted of 9 families, 16 species, and 1,009 individuals. The distribution pattern of natural enemy insects in chili plantations is clustered (Id > 1). Based on the PCA analysis method, the temperature has the most impact on natural enemy insects' presence in this study.
The Effects of Antioxidant Supplements on the Inflammatory Gene Expression of Osteoarthritis-Like Chondrocytes

Osteoarthritis patients often experience pain and inflammation in joints. To understand whether antioxidant supplements could reduce inflammation and could potentially be applied for osteoarthritis treatment, vitamin E and resveratrol were investigated in this study. Hydrogen peroxide was used for inducing inflammation in porcine chondrocytes, and the lumen density was measured for the level of oxygen-derived free radicals. In total, 5, 50, 100, and 200 μM of vitamin E and resveratrol were analyzed for cell viability and the effect of lumen density. In addition, the expressions of IL-1β, TNF-α, MMP-1, MMP-13, and COL2A1 were investigated when treating chondrocytes with 100 μM vitamin E, 5 μM resveratrol, or their combination before or after hydrogen peroxide induction. Inducing chondrocytes with hydrogen peroxide for 30 min increased the level of lumen density sufficiently and stimulated the expression of inflammatory genes. All the concentrations of vitamin E and resveratrol showed good cell viability. Single treatment with either vitamin E or resveratrol reduced inflammatory gene expression, and combined treatment increased the expression of collagen type II. The results suggested that post-treatment with both vitamin E and resveratrol has a better effect on the reduction in inflammation in osteoarthritis-like chondrocytes.
Mineralogical controls on antimony and arsenic mobility during tetrahedrite-tennantite weathering at historic mine sites Špania Dolina-Piesky and Ľubietová-Svätodušná, Slovakia

Abstract The legacy of copper (Cu) mining at Špania Dolina-Piesky and Ľubietová-Svätodušná (central Slovakia) is waste rock and soil, surface waters, and groundwaters contaminated with antimony (Sb), arsenic (As), Cu, and other metals. Copper ore is hosted in chalcopyrite (CuFeS2) and sulfosalt solid-solution tetrahedrite-tennantite {Cu6[Cu4(Fe,Zn)2]Sb4S13–Cu6[Cu4(Fe,Zn)2]As4S13} that show widespread oxidation characteristic by olive-green color secondary minerals. Tetrahedrite-tennantite can be a significant source of As and Sb contamination. Synchrotron-based μ-XRD, μ-XRF, and μ-XANES combined with electron microprobe analyses have been used to determine the mineralogy, chemical composition, element distribution, and Sb speciation in tetrahedrite-tennantite oxidation products in waste rock. Our results show that the mobility of Sb is limited by the formation of oxidation products such as tripuhyite and roméite group mineral containing 36.54 wt% Sb for samples where the primary mineral chemical composition is close to tetrahedrite end-member. Antimony K-edge μ-XANES spectra of these oxidation products indicate that the predominant Sb oxidation state is 5+. Arsenic and Cu are also hosted by amorphous phases containing 6.23 wt% Sb on average and these are intergrown with tripuhyite and roméite. Antimony in this environment is not very mobile, meaning it is not easily released from solid phases to water, especially compared to As, Cu, and S. For samples where the primary sulfosalt is close to tennantite composition, the oxidation products associated with tennantite relicts contain 2.43 wt% Sb and are amorphous. The variable solubility of the secondary minerals that have been identified is expected to influence mobility of Sb and As in near-surface environment.
[Metabolic synapse. I. Effect of intracellular microinjection of 3'-5'-AMP].

: Cyclic 3'-5'-AMP was injected into neurons of Helix pomatia (theta greater than 50 mu) by the current of 10(8) minus 10(9) A. This current was passed from one intracellular electrode to another by means of a photogenerator very well isolated from the ground. The injection of 3'-5'-AMP results in a depolarization and increase of the frequency of spontaneous activity. These changes continue for several seconds after the current is switched off. The intracellular injection of 5'-AMP or 5'-ATP and also extracellular application of 3'-5'-AMP by either the same or tenfold current does not change the spontaneous activity of these neurons.
Flow Behavior and Pressure Drop of Two-Phase Flow through C-Shaped Bend in Vertical Plane, (II): Downward Flow

Experimental results are presented on the flow behavior, average void fraction and pressure drop in air-water two-phase flow mixture flowing upward through a C-shaped bend curved in vertical plane. The curved test section of transparent acrylic resin tubing was varied in four versions of (a) 90 mm, (b) 132.5 mm and (c) 180 mm radii of curvature with 16 mm inside diameter tube, and (d) 135 radius with 24 mm diameter tube. The combined action of gravity and centrifugal force acting on the two-phase flow is expressed in terms of a modified Froude number representing the balance of radial forces between those acting on the liquid and the gaseous phases of the flow passing through the reclined vertical U- bend. The average void fraction in the curved test section was determined, and empirically correlated to the pressure drop, by means of a series of nondimensional numbers.
Material efficiency and its contribution to climate change mitigation in Germany: A deep decarbonization scenario analysis until 2060

Germany's greenhouse gas emissions have declined by 35% since 1990, and the national policy ambition is to become largely carbon‐neutral by 2050. A change of the industrial landscape and a partial transformation of energy supply have contributed to reductions so far, but for deep reductions, a deep transformation of the country's industrial metabolism is needed.
The method of envelopes to concisely calculate semiparametric efficient scores under parametric restrictions

Abstract When addressing semiparametric problems with parametric restrictions (assumptions on the distribution), the efficient score (ES) of a parameter is often important for generating useful estimates. However, usual derivation of ES, although conceptually simple, is often lengthy and with many steps that do not help in understanding why its final form arises. This drawback often casts onto semiparametric estimation a mantle that can turn away otherwise able doctoral students or researchers. Here we show that many ESs can be obtained as a one-step derivation after we characterize those features (envelopes) of the unrestricted problem that are constrained in the restricted problem. We demonstrate our arguments in three problems with known ES but whose usual derivations are lengthy. We show that the envelope-based derivation is dramatically explanatory and compact, needing essentially two lines where the standard approach needs 10 or more pages. This suggests that the envelope method can add useful intuition and exegesis to both teaching and research of semiparametric estimation.
eWOM credibility: a comprehensive framework and literature review

PurposeThe purpose of this paper is to provide a comprehensive review on electronic word-of-mouth (eWOM) credibility. Further, the authors propose a comprehensive and integrated model on eWOM credibility.Design/methodology/approachThe authors conducted a systematic review of the extant literature on marketing, sociology and psychology to identify the factors that affect eWOM credibility. Further, the authors developed themes and identified factors which lead to eWOM credibility.FindingsFour factors were identified, i.e. content, communicator, context and consumer, which affect eWOM credibility. Several variables associated with these four factors were identified, which result in eWOM credibility. Further, the authors developed 22 propositions to explain the causal relationship between these variables and eWOM credibility.Research limitations/implicationsThe conceptual model needs empirical validation across various eWOM platforms, i.e. social networking websites, e-commerce websites, etc.Practical implicationsManagers and e-commerce vendors can use these inputs to develop specific design elements and assessment tools which can help consumers to identify credible eWOM messages. Credible eWOM messages, in turn, will increase the “trust” and “loyalty” of the customers on e-commerce vendors.Originality/valueThis paper provides a conclusive takeaway of eWOM credibility literature by integrating multiple perspectives and arguments from the extant literature. This study also presents an integrated model, which provides a theoretical framework for researchers to further examine the interaction effect of various variables, which results in eWOM credibility.Peer reviewThe peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-06-2020-0263
DigiPrime: Digital Platform for Circular Economy in Cross-Sectorial Sustainable Value Networks

Circular Economy is the solution for the current environmental crisis, representing a huge economic opportunity to build new sustainable businesses. However, many barriers need to be faced for its implementation at industrial scale—firstly, the lack of data sharing between the different stakeholders of product value-chains. The DigiPrime project is an EU-funded Innovation Action aimed at developing and demonstrating a digital platform with services able to unlock innovative cross-sectorial business models for the remanufacturing and recycling of target value-added products. In this paper, the concept behind the DigiPrime project is reported, with a particular focus on the construction sector.
REALIZACIJA UPITA ISKAZANIH PUTEM OBDA SISTEMA SA RELACIONIM IZVORIMA PODATAKA

U ovom radu predstavljene su osnove OBDA pristupa u upravljanju podacima. Dat je pregled izabranih OBDA tehnologija, i opisan je jedan metod realizacije upita iskazanih prema OBDA sistemima sa relacionim izvorima podataka.
Bio-Based Adhesives for Wooden Boatbuilding

The aim of the present investigation was to assess the behaviour of strip-planked parts by comparing wooden specimens glued using two different bio-based adhesives with wooden specimens glued using a conventional epoxy resin generally used in boatbuilding. Experimental tests in accordance with UNI EN standards were performed in order to evaluate mechanical properties such as tensile strength, shear strength, elastic modulus and shear modulus. In addition, compression shear tests were performed in order to assess the shear modulus of the adhesives. The obtained results demonstrate that the mechanical properties of the investigated bio-based adhesives are comparable to, and sometimes better than, the conventional epoxy resin. Moreover, the experimental results give useful information for the design of wooden boats when the strip-planking process is used. Furthermore, a new procedure to assess the shear modulus of elasticity and shear strength, using the application of compression loadings, was proposed. The results were compared to standard lap-joint tests and showed even lower dispersion. Consequently, the testing procedure proposed by the authors is valid to assess shear properties under compression loading, and it can be applied in most laboratories since it involves the use of common testing devices.
Biocatalytic transamination with near-stoichiometric inexpensive amine donors mediated by bifunctional mono- and di-amine transaminases

The discovery and characterisation of enzymes with both monoamine and diamine transaminase activity is reported, allowing conversion of a wide range of target ketone substrates with just a small excess of amine donor. The diamine co-substrates (putrescine, cadaverine or spermidine) are bio-derived and the enzyme system results in very little waste, making it a greener strategy for the production of valuable amine fine chemicals and pharmaceuticals.
Tropical Drivers of Interannual Vegetation Variability in Eastern Africa

Mechanisms by which tropical Pacific and Indian Ocean sea surface temperatures influence vegetation in Eastern Africa and which role drought-induced fires play have not been fully explored. Here, we use a suite of idealized Earth system model simulations to elucidate the governing processes for eastern African interannual vegetation changes. Our analysis focuses on Tanzania. In the absence of ENSO-induced sea surface temperature (SST) anomalies in the Tropical Indian Ocean (TIO), El Niño causes during its peak phase negative precipitation anomalies over Tanzania due to a weakening of the tropical-wide Walker circulation and anomalous descending motion over the Indian Ocean and southeastern Africa. Resulting drought conditions increase the occurrence of wildfires, which leads to a marked decrease in vegetation cover. Subsequent wetter La Niña conditions in boreal winter reverse the trend in vegetation, causing a gradual 1-year-long recovery phase. The 2-year-long vegetation response in Tanzania can be explained as a double-integration of the local rainfall anomalies, which originate from the seasonally-modulated ENSO Pacific-SST forcing (Combination mode). In the presence of interannual TIO SST forcing, the southeast African precipitation and vegetation responses to ENSO are muted due to Indian Ocean warming and the resulting anomalous upward motion in the atmosphere.
Sparse Measurement-Based Coordination of Electric Vehicle Charging Stations to Manage Congestions in Low Voltage Grids

The increasing use of distributed generation and electric vehicle charging stations provokes violations of the operational limits in low voltage grids. The mitigation of voltage limit violations is addressed by Volt/var control strategies, while thermal overload is avoided by using congestion management. Congestions in low voltage grids can be managed by coordinating the active power contributions of the connected elements. As a prerequisite, the system state must be carefully observed. This study presents and investigates a method for the sparse measurement-based detection of feeder congestions that bypasses the major hurdles of distribution system state estimation. Furthermore, the developed method is used to enable congestion management by the centralized coordination of the distributed electric vehicle charging stations. Different algorithms are presented and tested by conducting load flow simulations on a real urban low voltage grid for several scenarios. Results show that the proposed method reliably detects all congestions, but in some cases, overloads are detected when none are present. A minimal detection accuracy of 73.07% is found across all simulations. The coordination algorithms react to detected congestions by reducing the power consumption of the corresponding charging stations. When properly designed, this strategy avoids congestions reliably but conservatively. Unnecessary reduction of the charging power may occur. In total, the presented solution offers an acceptable performance while requiring low implementation effort; no complex adaptations are required after grid reinforcement and expansion.
High Excitation Intensity Opens a New Trapping Channel in Organic–Inorganic Hybrid Perovskite Nanoparticles

We investigated the excited-state dynamics of CH3NH3PbBr3 perovskite nanoparticles (NPs) and bulk crystals under various excitation intensity regimes using transient absorption spectroscopy. We confirmed the sub-band gap hole trap states with optical transition to the conduction band in both samples. In bulk crystals, the excited-state dynamics is independent of pump intensity. However, in NPs, pronounced intensity dependence appears. At low intensities, the hole trap states do not affect the excited-state dynamics due to the potential barrier between the photogenerated holes and the surface trap states. When the excitation density is much higher than one per NP, charge accumulation makes hot holes overcome the barrier and get trapped with electrons long living in the conduction band (≫10 ns). This explains the high emissive properties of such NPs despite the existence of surface traps. However, in the application of emitting devices requiring high excitation intensity, the surface trapping becomes signif.
Maladaptive Cognitive Bias in the New Normal Period: An Analyses from a Behavioural Science Perspective in the Time of Covid-19

The limited number of effective medical interventions to combat Covid-19 to date has resulted in government institutions focusing on preventive behaviours believed to minimize virus transmission. The Indonesian government has launched a ‘new normal’ campaign whereby outdoor activities are restricted by various health protocols established by health authorities, such as wearing a mask, habitual hand washing and social distancing. However, these protocols have not been implemented with a thorough understanding of human behaviour. The result is numerous violations of the protocol, which subsequently lead to the persistence of Covid-19 cases in Indonesia. Behavioural science as an approach can provide important insights regarding the systematic errors of thought that contribute to non-compliance with Covid-19 health signs. This article will elaborate on the different types of systematic errors, known as cognitive biases, that plays a role in Covid-19 protocol compliance and suggest the corresponding solutions deemed most effective to overcome these obstacles. Understanding of the dynamics paired with the application of behaviourally informed strategies will hence contribute to the attempt to flatten the Covid-19 curve.
First Principles Study of Thermoelectric Properties of Skutterudites: Ir4Sb12 and Ca0.04Ir4Sb12

First – principles calculations to study thermal and electrical properties of pristine and calcium filled skutterudite Ir4Sb12 has been carried out. Density of states (DOS) and band-structure calculations are based on Density Functional Theory (DFT) within Generalized Gradient Approximation (GGA). Transport properties are calculated using BoltzTrap software packages. Volume optimization is carried out on the basis of Murnaghan equation of states. The optimized lattice parameter of pristine Ir4Sb12 is found to be 9.4243 Å and that of calcium filled Ir4Sb12 is found to be 9.4949 Å. Our calculation shows that pristine Ir4Sb12 is a p-type of semiconductor with a narrow PBE-GGA band gap of 0.25 eV. After filling calcium, the band gap is reduced to zero showing the metallic behavior of filled compound. Band structure, density of states, variations of electrical and thermal conductivities with temperature and Seebeck coefficient show that calcium filled Ir4Sb12 has a metallic character. At Fermi level, the maximum value of thermoelectric figure of merit of unfilled Ir4Sb12 compound at temperature 400K is found to be 0.5. At the same temperature thermoelectric figure of merit calcium filled Ca0.04Ir4Sb12 is found to be around 0.03. The maximum value of of Ca filled Ca0.04Ir4Sb12 at 1000K is computed around 0.1.