Miracle-dz/UniFAR-FTUs huggingface dataset:
Effect of Moringa oleifera leaf powder inclusion on the phytochemical and antioxidant activity of akamu

Moringa leaf powder (MLP) was added akamu at 10%, 20%, 30% and 40% levels of incorporation and labelled MA 1 , MA 2 , MA 3 and MA 4 respectively. Another batch of MLP was blended with an equal amount of soybean powder (SBF) and similarly incorporated into akamu at the same levels and labelled MSA 1 , MSA 2 , MSA 3 and MSA 4 . Akamu supplemented with 40% soybean flour (SBA) and unsupplemented akamu (AKM) served as controls. The total phenolic content of akamu increased from 0.35 to 3.06 g/100g, flavonoids increased from 0.06 to 0.27 g/100g for AKM and MA4, respectively. The total phenolic content for SBF incorporated akamu increased (p < 0.05) from 0.35 g/100g to 1.71 g/100g, flavonoids increased (p < 0.05) from 0.06 g/100g to 0.25 g/100g for AKM and MSA 4 respectively. The percentage DPPH scavenging activity of akamu was enhanced significantly (p < 0.05) by the addition of MLP and SBF. The DPPH activity of MA 4 (88.91%) was significantly higher than that of the AKM (33.40%). Similarly, the DPPH activity of MSA 4 (86.34%) was higher than that of AKM. There were significant (p < 0.05) increases in reducing power with levels of addition of both MLP and SBF. The reducing power was elevated from 2.30 mg/g for AKM to 28.8 mg/g for MA4 and to 39.9 mg/g for MSA 4 . The inclusion of moringa leaf powder (with or without soybean flour) was able to significantly increase the antioxidant activity of akamu , thus enhancing its functional status. Keywords: Moringa leaf powder, soybean flour, phytochemicals, antioxidant activity
Metal‐organic frameworks derived FeSe2@C nanorods interconnected by N‐doped graphene nanosheets as advanced anode materials for Na‐ion batteries

Herein, unique FeSe2@C nanorods interconnected by nitrogen‐doped graphene nanosheets (FeSe2@C/NG) were successfully prepared using Fe‐based metal‐organic framework (MOF) nanorods as sacrificial templates. During the thermal treatment in an inert atmosphere, the FeSe2 nanoparticles were formed in situ when selenium reacted with Fe species in the MOF. The organic species were simultaneously transformed into a conductive carbon material. After combining with N‐doped graphene nanosheets, the obtained FeSe2@C/NG composites showed an improved reversible capacity, great rate capabilities, and cycling stability as anodes for sodium‐ion batteries. The composite electrode comprised a specific capacity of 411 mA h g−1 after 100 cycles at 0.5 A g−1. When tested at a higher current density of 7.0 A g−1, the discharge capacity was 291 mA h g−1. The improved electrochemical properties can be attributed to structural features of composites and the synergistic effect between the components. The one‐dimensional nanostructure of FeSe2@C nanorods can shorten the ion diffusion path. Additionally, the carbon framework derived from the organic species in Fe‐MIL‐88 and the interconnected N‐doped graphene nanosheets imparted a synergistic effect, which led to the formation of a conductive highway that provided a rapid electron transport, an ample ion reaction site, and acted as buffer layers for active materials.
Cost-effective multiplex real-time PCR chip system using open platform camera

This paper proposes a cost-effective real-time multiplex polymerase chain reaction (PCR) chip system for point-of-care (POC) testing. In the proposed system, nucleic acid amplification is performed in a reaction chamber built on a printed-circuit-board (PCB) substrate with a PCB pattern heater and thermistor. Fluorescence can be detected through the transparent plastic on the other side of the substrate. Open platform cameras were used for miniaturization and cost effectiveness. We also used a simple and cost-effective oblique lighting to stimulate fluorescence. Response performance was investigated by observing the change in the average brightness of the chamber images with various reference dye concentrations. In addition, we investigated the interference properties between different colors by measuring the fluorescence response for each dye concentration mixed with the maximum concentration of the different dyes. Quantitative performance was validated using standard DNA solutions. Experimental results show that the proposed system is suitable for POC real-time multi-PCR system.
Environmental management and hotel profitability: operating performance matters

While there is growing consensus on the benefits of going green, the relative benefits of revenue-enhancing and cost-cutting effects of environmental practices over performance have remained a more conservative and less explored phenomenon in corporate management studies. The present study investigates the two parallel mediation effects of cost-saving and revenue generation on profitability through environmental management practices. A bootstrap method is employed to make a statistical inference of the causal mediation effects. The data collected from the lodging industry in Antalya/Turkey revealed that the revenue-enhancing and cost-cutting effects of environmental participation have a positive impact on profitability, while no difference was identified in the strength of the indirect effects. In conclusion, the findings of this study indicate a complementary effect of cost reduction and revenue enhancement for green profit.
Design and manufacturing of biomimetic porous metal implants

The stress-shielding effect can be minimized by using porous materials with pre-determined implant stiffness. This study aims to design interconnected porous metal implants that resemble the stiffness variations in a bone. Our design is intended to innovate mechanical loading conditions at the peri-implant bone, promoting a more robust implant–bone interface. The positional variations of stiffness in the scaffold are designed based on the Hounsfield Unit of computed tomography (CT) scan data of that location. Finite element (FE) analysis evaluates porous implants' performance compared to solid implants. Porous metal implants were additively manufactured with Ti6Al4V for compression test and reconstructed the 3D model from the micro-CT scan to validate the FE model. FE results revealed that porous implants generated a strain profile at peri-implant bone closer to normal bone irrespective of material property or anatomical location compared to solid implants.
First-time, first-repeat and multiple-repeat visitors: a conditional counterfactual quantile expenditure decomposition analysis

ABSTRACT We adapt a conditional counterfactual quantile decomposition structure to identify the contributions of relative consumption behaviours and potential market imperfections to observed expenditure differentials between first-time, first-repeat and multiple-repeat visitors to an emerging destination. This letter advances the discussion on the expenditure consequences of visitation frequency, with a parametric assessment of the contribution of market imperfections, such as visitors’ limited information and firms’ market power. Applicable to virtually any a priori segmentation, this approach offers a tool for the assessment of existing segmentation strategies, in pursuit of a more efficient resource allocation in the tourism industry, especially during high seasons.
Hierarchical Multiple Access (HiMA) for Fog-RAN: Protocol Design and Resource Allocation

We introduce a set of multiple access protocols, called hierarchical multiple access (HiMA), which are based on non-orthogonal multiple access (NOMA) and time-division multiple access (TDMA), optimized for the hierarchical network scenario. The proposed protocols can be efficiently utilized in various network configurations with an hierarchical form, such as relay networks, cloud-radio access networks (C-RANs), and fog-radio access networks (F-RANs). In particular, C-RANs and, more recently, F-RANs are regarded as promising paradigms to fully utilize the edge of the networks. Therefore, the implementation of novel multiple access protocols to properly exploit these configurations is critical for the fifth generation and beyond of wireless access. Furthermore, the resource allocation problem is formulated for each protocol with respect to the timeslot duration and power. As a result two fairness metrics are optimized, namely max-min rate fairness and proportional fairness. Finally, numerical results reveal the effectiveness of the joint design in the hierarchical network and an interesting trade-off is identified between fairness and achievable rate. Interestingly, despite NOMA being a very promising alternative to conventional multiple access schemes, the protocol that is solely based on NOMA does not always outperform the rest.
ANALYSIS OF STUDENT’S MATHEMATICAL REASONING ABILITY IN SOLVING MATHEMATICAL PROBLEM BASED ON HOTS

This study was focused onanalyzing student’s mathematical reasoning abilities in solving Higher Order Thinking Skill (HOTS) problems anddetermining the level of student understanding of HOTS questions. The researchmethod is qualitative descriptive with 12 subjects. Based on the results of the test, the subject’s reasoning abilities were grouped into 3 categories of reasoning abilities, namely high, moderate and low. The results showed that students who had high reasoning abilities were able to fulfill the 7 mathematical reasoning indicators very well at each stage of real analysis problem solving and were able to work on HOTS levelquestions to analyze and create. Students with moderate reasoning abilities were only able to fulfill several indicators of mathematical reasoning, namely presenting written statements, solving problems as planned and checking again. Students who had low reasoning abilities were not able to understand the questions well, so students cannot solve it. Based on the results of the questionnaire, it was concluded that 46.67% of students could understand the HOTS problem well, 33% of the students could not plan the solution, namely writingdown the information that was known in answering the questions, and 33% of the students were not able to check the validity of an argument and draw conclusions on the evidence. Furthermore, it was obtained the relationship between student’s mathematical reasoning abilities and the level of student understanding of HOTS-oriented questions which fulfilled the linear regression equation Y = 71.574 + 0.009X. This model showed that the level of student understanding of HOTS-oriented questions had a positive effect on learning outcomes. Based on the research results, it was suggested that lecturers provide more training related toproof with the aim of improving students' mathematical reasoning abilities.
An alternative approach to the relation between accretion luminosity and mass accretion rate

In this paper I introduce and discuss an alternative approach to the relation between accretion luminosity, Lacc, and mass accretion rate, ˙M : instead of the universally adopted Lacc = GM ˙M/R, I propose the dynamical definition Lacc = v2f˙M/2 where vf is the final velocity of the infalling matter at the surface of the accreting object of mass M and radius R. Both definitions are based on the energy conservation, but while the former assumes that matter is in free fall, the latter is valid always. By adopting the alternative form for Lacc, I show that the Eddington luminosity Led, when the outward radiation pressure wins on gravity, is never produced with a finite ˙M. Instead, Led is a limit asymptotically reached when ˙M → ¥. My argument is very simple, so I felt the need to find a possible explanation to why no one arrived to this conclusion before. To this aim, I give a brief presentation of the history of accretion, from the pioneer work of Hoyle and collaborators until the ’60s of last century, to show how the perception of the role of the radiation pressure in accretion evolved. I give also some practical applications of the formulae I derived, in the case of high-mass star formation and of the growth of super massive black holes. The study of these two processes, already complex per se, becomes more difficult to solve because of the existence of a limiting ˙M, named Eddington mass accretion rate or ˙Med, that it is supposed to generate a luminosity equal to Led, making it impossible to accrete at rate ˙M > ˙Med. Accretion rates higher than ˙Med are however necessary, as theory and observations show. My definition of Lacc takes naturally into account the work done by radiation pressure to slow down the infalling matter: as a consequence, Lacc does not increase linearly with ˙M and Led is only an asymptotic value.
Talking about cultural differences in an age of globalization and hybridization: Between Obelix and Stephen Colbert

The concept of culture has long been central to mission theory and practice. However, current understandings of culture can easily fall into one of two extremes: on the one hand, essentialist views of culture can easily lead to stereotyping, and on the other hand, extreme postcolonial cultural hybridization theories reject typologies of cultural differences altogether and tend to disregard empirical research on cultural differences. This article describes how to speak of cultural differences, including the use of typologies of cultural differences, without falling into these extremes. Five myths and seven recommendations regarding research and description of cultural differences are put forth.
The effectiveness of absence of humour in leadership in firefighting frontline communication: a reversal theory perspective

ABSTRACT A leader’s humour can be detrimental to communication effectiveness, particularly in emergency situations. Using reversal theory, we argue that the absence of humour in leadership leads to more effective communication in frontline practice because it enhances communication clarity. Combining data from a vignette study (N = 127) and two field studies (N = 134 and N = 165) among firefighters working at the frontline, the results confirm our expectations. As frontline interventions call for a serious mindset, the absence of humour in a leader increased perceived leader frontline communication effectiveness due to higher clarity in frontline communication. Overall, the findings demonstrate the critical role of leaders not displaying humour in emergency settings, and they highlight the influence of contextual factors on determining whether the use of humour is beneficial or risky in communication.
Institutionalization Mechanisms at the Universities: Case Study of the Turkish Universities

The aim of this study is to explain the institutionalization mechanisms of a focal institution of higher education and two spawning institutions. In this context, views of faculty members on institutional similarity of universities have been presented. Case study was employed in the research. This research design is also a comparative design as focal institution and spawning institutions were compared in terms of institutionalization in the research. The participants of this research is comprised of 27 faculty members who have been working in focal institution called Gazi University Faculty of Education, and spawning institutions called Ahi Evran University Faculty of Education and Kastamonu University Faculty of Education in Turkey. Focal and spawning institutions differ from other faculties within their universities due to the fact that their goal is to train individual with typical faculty of education culture. Faculties are under the pressure adhering to policies and standards established by the Council of Higher Education such as establishing which courses will be given and restructuring of departments. Spawning faculties are allowed to consult with Gazi University when they are facing uncertainties. In the case of uncertainty, unethical behaviors that the spawning institutions copy or take as a model from the focal institutions must be prevented.
The role of different edible vegetable oils as hypolipidemic agents on experimental hyper-lipidemic rat model

Hyperlipidemia is a common disorder that includes genetic and functional disorders represented by elevated lipid levels in the body. The objective of this study was to characterize the physicochemical parameters of the edible seed oils separated from linseed, soybean, olive seed and blends from different proportion, then identify the optimum blend in controlling serum lipid profile in experimental hyperlipidemic rat model. Histopathological examinations of the liver section were carried out to support the laboratory investigation. Sixty male albino rats were used for the study. The animals were divided into ten groups, where group 1 represents negative control, while rats in group 2 received high fat diet and served as positive control. Groups from 3 to 10 were fed high-fat diet and then supplemented with different vegetable oils. At the termination of the 6 weeks trial, blood samples and organs were collected for estimation of lipid profile. Results showed that rats administered different vegetable oils significantly decrease levels of serum total cholesterol (TC), triglycerides (TG), and low-density lipoprotein (LDL) cholesterol as well as increase levels of high-density lipoprotein (HDL) cholesterol in comparison with rats fed high-fat diet. Histopathological examination of liver tissue in positive control showed severe dilatation and congestion in the central vein with fatty change in the surrounding adjacent hepatocytes. While administration of different vegetable oils showed marked improvement in the histological feature of liver tissues. In conclusion, the findings suggest that balanced blend from linseed, soybean and olive oils help in controlling hyperlipidemia and restoring the lipid profile.
Understanding the effects of climate change via disturbance on pristine arctic lakes—multitrophic level response and recovery to a 12‐yr, low‐level fertilization experiment

Effects of climate change‐driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low‐level fertilization experiment to mimic persistent, climate change‐driven disturbances (deeper thaw, greater weathering, or thermokarst failure) delivering nutrients to arctic lakes. We measured responses of pelagic trophic levels over 12 yr in a fertilized deep lake with fish and a shallow fishless lake, compared to paired reference lakes, and monitored recovery for 6 yr. Relative to prefertilization in the deep lake, we observed a maximum pelagic response in chl a (+201%), dissolved oxygen (DO, −43%), and zooplankton biomass (+88%) during the fertilization period (2001–2012). Other responses to fertilization, such as water transparency and fish relative abundance, were delayed, but both ultimately declined. Phyto‐ and zooplankton biomass and community composition shifted with fertilization. The effects of fertilization were less pronounced in the paired shallow lakes, because of a natural thermokarst failure likely impacting the reference lake. In the deep lake there was (a) moderate resistance to change in ecosystem functions at all trophic levels, (b) eventual responses were often nonlinear, and (c) postfertilization recovery (return) times were most rapid at the base of the food web (2–4 yr) while higher trophic levels failed to recover after 6 yr. The timing and magnitude of responses to fertilization in these arctic lakes were similar to responses in other lakes, suggesting indirect effects of climate change that modify nutrient inputs may affect many lakes in the future.
An Inheritance Mode of Rural Cultural Heritage Based on Virtual Museum in China

In China, there is a crisis of rural cultural heritage inheritance due to urbanization. The traditional cultural inheritance modes such as building museums may not satisfy the needs of wide and fast culture transmission, communication, and inheritance. However, the virtual museum may provide new solutions. Nowadays, China has essential social-economic conditions for virtual museum construction but lacks sustainable modes for virtual museums supporting rural cultural heritage inheritance. In this study, we adopted the theoretical analysis method, expert argumentative method, and combined with virtual museum technology analysis to design an appropriate mode for the cultural heritage’s inheritance in rural areas. We built a demonstrational virtual museum for the Mt. Mogan government according to this mode, adopted a comparative analysis and questionnaire survey to verify, and assess the application effects of the mode. Results show that the inheritance mode of rural cultural heritage based on the virtual museum has advantages of larger exhibition scale and wider scope of cultural transmission and communication with less input, and this mode’s operation is steady and sustainable. The inheritance crisis of rural cultural heritage needs reasonable solutions, and our results can be a guideline for building virtual museums in rural areas to promote wide, fast, and sustainable cultural inheritance.
Pengaruh Big Five Personality terhadap Investment Decision pada Perusahaan Peer to Peer Lending

Investment decision making is a crucial process that is influenced by many factors. This study aims to examine the personality traits that influence investment decisions in Peer to Peer Lending companies. Personality measurements performed by researchers using Big Five Personality Traits, with personality dimensions: Openness to Experience, Conscientiousness, Extraversion, Agreeableness, and Neuroticism.As a result of the hypotheses testing, it was concluded that there was a significant relation between Conscientiousness, Neuroticism with investment decision. However, Openness to Experience, Extraversion, and Agreeableness did not predict investment decision. Pengambilan keputusan investasi merupakan proses krusial yang dipengaruhi oleh banyak faktor. Penelitian ini bertujuan untuk menguji sifat-sifat kepribadian yang mempengaruhi keputusan investasi di perusahaan Peer to Peer Lending. Pengukuran kepribadian yang dilakukan oleh peneliti menggunakan Big Five Personality Traits, dengan dimensi kepribadian: Openness to Experience, Conscientiousness, Extraversion, Agreeableness, dan Neuroticism.Sebagai hasil dari pengujian hipotesis, disimpulkan bahwa ada hubungan yang signifikan antara Conscientiousness, Neuroticism dengan keputusan investasi. Namun, Keterbukaan terhadap Pengalaman, Extraversion, dan Agreeableness tidak memprediksi keputusan investasi.
Sleep duration during COVID-19 lockdown: systematic review and meta-analysis

In attempts to slow down the spread of COVID-19 pandemic, countries took different measures including lockdowns. Several studies reported the effects of lockdowns on sleep mostly suggesting an increase in sleep duration during lockdowns. This is an interesting outcome as life in the modern world were associated with insufficient sleep. The present study is a systematic review and meta-analysis of work regarding sleep duration during lockdowns. We searched PubMed using the terms “COVID-19”, “SARS-CoV-2”, “lockdown”, “stay at home”, “quarantine” and “sleep” and found 262 papers. After applying exclusion criteria, we identified 26 papers (with 35 discrete studies) for the meta-analysis. A fixed effect model was used with effect sizes estimated using Cohen’s d and heterogeneity of effect sizes tested using the Cochran’s Q test statistics. Most studies (31/35) report an increase in sleep duration during lockdown periods with a mean (± STD) of 31.5 ± 21.2 minutes. Effect sizes (Cohen’s d) ranged between 0.08 and 3.34, which are considered between very small and huge. Q statistics was 4859.3 (p < 0.0001) and with no indication for publication bias (Egger’s test, p = 0.45). Eight studies also reported measures of “sleep quality” with 6/8 reporting worsening of sleep quality with small to large effect sizes Cohen’s d range between 0.09 and 1.86). The study demonstrates increased sleep duration during lockdowns. Increased sleep duration is a positive change, but effects on well-being during lockdowns might be overshadowed by reduced sleep quality, increased stress, and lowered mood. It is interesting whether longer sleep duration habits may survive to post-COVID-19 days.