Investigation of Neurotransmitter’s Knockdown Effect on Drosophila Melanogaster Female Aggression

Drosophila melanogaster (D. melanogaster) is a popular model organism in neurobiology. While aggression has been studied heavily in male drosophila, there\u27s minimal research on aggression in female drosophila. Neurotransmitters influencing aggressive behaviour in female D. melanogaster are poorly understood. Various neurotransmitters such as dopamine, octopamine, and serotonin influence aggression in D. melanogaster Further investigation of the role of neurotransmitters on aggression is thus important. The purpose of our experiment is to observe the effect of the knockdown of dopamine, octopamine and glutamate on aggression in female D. melanogaster

Re-thinking flexibility in higher education: A shared responsibility of students and educators

In recent years, there has been a growing recognition of the importance of flexibility in higher education as a key factor that can contribute to enhancing student learning and accessibility. However, flexibility has previously been investigated through an institutional lens that fails to consider those directly involved—students and educators. Moreover, the majority of current research regarding flexibility is based on anecdotal evidence and theoretical frameworks; therefore, evidence-based research is lacking. This plenary session is presented from a student perspective, who found that often, the parts of her identity that she took pride in—middle eastern background, gender, and hearing loss—were also the cause of her struggles. In conversations with other students, it was revealed that their diversity or life circumstances hindered their ability to pursue education. Flexibility was identified as key to enhancing their academic experience. Thus, the presenter decided to focus her fourth year thesis on a project that investigated students’ and educators’ experiences surrounding flexibility to inform future policies about effective flexible practices that accurately represent both groups. This session will highlight similarities and differences between students’ and educators’ experiences, barriers educators face when implementing flexibility, and a current misalignment in perceptions of flexibility between students and educators. Engaging in transparent and reciprocal open conversations can enhance the student-educator bond and solidify both groups’ sense of belonging. This study was approved by Western’s Non-Medical Research Ethics Board

Application of tawarruq in Islamic banking institutions in Somalia

Purpose – The purpose of this study is to examine the acceptability of tawarruq in the banking industry in Somalia, focusing on awareness, need, compatibility, relative advantage, behavioral attitude and the role of Shariah scholars. This study is governed by the Theory of Islamic Consumer Behavior. Design/methodology/approach – A questionnaire survey was conducted involving 150 customers of Islamic banks in Mogadishu, Somalia. This research adopts a quantitative methodology, using descriptive and survey analyses by employing SPSS 23. Smart-PLS-4 SEM was used to test the six hypotheses established in the study. Findings – This study provides evidence that the customers of Islamic banks in Somalia are looking forward to Islamic banks offering tawarruq in the country. Respondents viewed tawarruq as a very attractive product compared to other existing products of Islamic banks in the country. The need for tawarruq, its compatibility and relative advantage have a positive and significant influence on the intention to use tawarruq products for cash financing purposes, whereas customer awareness, behavioral attitudes and the role of Shariah scholars have insignificant influence. Practical implications – The findings of this study can be beneficial to all Islamic financial institutions in Somalia by applying tawarruq contract to facilitate cash financing. Originality/value – This study contributes to the literature by enhancing the awareness of tawarruq in Somalia. The study also shed light on the need of Islamic banks’ customers on tawarruq for cash financing purposes in Somali

Flexible learning dimensions in higher education: aligning students’ and educators’ perspectives for more inclusive practices

Driven by the rise of recent technologies and long-standing interest in accommodating diverse student needs, the demand for flexibility in higher education has intensified. Moreover, the COVID-19 pandemic has intensified studies investigating online learning effects, reflecting shifting preferences and demands in education. Although prior research recognizes diverse flexibility practices, a narrow focus on instructional delivery limits its potential. Bridging this gap requires re-envisioning flexible learning by involving students, educators, and institutions in the transformation process. Therefore, this study aims to investigate and compare students’ and educators’ perspectives and experiences of five dimensions of flexibility (deadlines, modality, assessment type, grading and weighting, and course correspondence). The study involves a quantitative and qualitative survey, composed of Likert scale and open-ended questions. The survey respondents were students (N = 315) and educators (N = 100) at Western University across different years and programs. The quantitative component reveals a general alignment between student and educator preferences across flexibility dimensions. Noteworthy preferences include collaborative deadline setting, non-timed and take-home assessments, and more frequent, lower-weighted tasks. Students’ increased preference for hybrid learning, despite a general preference for in-person formats, underscores the value placed on flexibility and adaptability. Qualitative findings illuminate the broader implications of flexibility that can be organized into the following four themes: (1) flexibility humanizes teaching and learning, (2) flexibility recognizes diverse student populations, (3) flexibility provides broad accommodation and increases accessibility, and (4) flexibility can offer immediate relief but poses long-term consequences. In conclusion, this study emphasizes the multifaceted nature of flexibility in higher education, offering a nuanced understanding of the impact of flexibility on students, educators, and institutions, encouraging further exploration and evidence-based policy decisions. Beyond academia, the research suggests potential reshaping of the higher education landscape, positioning flexibility as a fundamental element to foster a more inclusive, supportive, and effective learning environment for both students and educators

Near-Earth asteroid (3200) Phaethon. Characterization of its orbit, spin state, and thermophysical parameters

The near-Earth asteroid (3200) Phaethon is an intriguing object: its perihelion is at only 0.14 au and is associated with the Geminid meteor stream. We aim to use all available disk-integrated optical data to derive a reliable convex shape model of Phaethon. By interpreting the available space- and ground-based thermal infrared data and Spitzer spectra using a thermophysical model, we also aim to further constrain its size, thermal inertia, and visible geometric albedo. We applied the convex inversion method to the new optical data obtained by six instruments and to previous observations. The convex shape model was then used as input for the thermophysical modeling. We also studied the long-term stability of Phaethon's orbit and spin axis with a numerical orbital and rotation-state integrator. We present a new convex shape model and rotational state of Phaethon: a sidereal rotation period of 3.603958(2) h and ecliptic coordinates of the preferred pole orientation of (319$^{\circ}$, $-$39$^{\circ}$) with a 5$^{\circ}$ uncertainty. Moreover, we derive its size ($D$=5.1$\pm$0.2 km), thermal inertia ($\Gamma$=600$\pm$200 J m$^{-2}$ s$^{-1/2}$ K$^{-1}$), geometric visible albedo ($p_{\mathrm{V}}$=0.122$\pm$0.008), and estimate the macroscopic surface roughness. We also find that the Sun illumination at the perihelion passage during the past several thousand years is not connected to a specific area on the surface, which implies non-preferential heating.Comment: Astronomy and Astrophysics. In pres

Zakat and the performance of Islamic banks. Empirical evidence

The objective of this study is to examine the performance of Islamic banks (IBs) in Malaysia based on zakat (ZOA and ZOE) and ROA and ROE. This is to effectively understand the factors influencing the performance of IBs in Malaysia. The study employs a balanced panel of 15 IBs for the period 2009-2018 using the System-GMM. The study provides justifications why zakat is the appropriate measurement for IBs’ performance. The study concludes that zakat is an appropriate performance measurement to explain the performance of IBs. This is because zakat is able to explain and truly reflects the performance of IBs and as such, IBs should pay more zakat as they generate more profit. Zakat therefore has a role to contribute to Islamic social finance in the context of IBs. Furthermore, IBs have indispensable roles in supporting the economy of a country through their liquidity creation and risk transformation functions

YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus

The rotation states of small asteroids are affected by a net torque arising from an anisotropic sunlight reflection and thermal radiation from the asteroids' surfaces. On long timescales, this so-called YORP effect can change asteroid spin directions and their rotation periods. We analyzed lightcurves of four selected near-Earth asteroids with the aim of detecting secular changes in their rotation rates that are caused by YORP. We use the lightcurve inversion method to model the observed lightcurves and include the change in the rotation rate $\mathrm{d} \omega / \mathrm{d} t$ as a free parameter of optimization. We collected more than 70 new lightcurves. For asteroids Toro and Cacus, we used thermal infrared data from the WISE spacecraft and estimated their size and thermal inertia. We also used the currently available optical and radar astrometry of Toro, Ra-Shalom, and Cacus to infer the Yarkovsky effect. We detected a YORP acceleration of $\mathrm{d}\omega / \mathrm{d} t = (1.9 \pm 0.3) \times 10^{-8}\,\mathrm{rad}\,\mathrm{d}^{-2}$ for asteroid Cacus. For Toro, we have a tentative ($2\sigma$) detection of YORP from a significant improvement of the lightcurve fit for a nonzero value of $\mathrm{d}\omega / \mathrm{d} t = 3.0 \times 10^{-9}\,\mathrm{rad}\,\mathrm{d}^{-2}$. For asteroid Eger, we confirmed the previously published YORP detection with more data and updated the YORP value to $(1.1 \pm 0.5) \times 10^{-8}\,\mathrm{rad}\,\mathrm{d}^{-2}$. We also updated the shape model of asteroid Ra-Shalom and put an upper limit for the change of the rotation rate to $|\mathrm{d}\omega / \mathrm{d} t| \lesssim 1.5 \times 10^{-8}\,\mathrm{rad}\,\mathrm{d}^{-2}$. Ra-Shalom has a greater than $3\sigma$ Yarkovsky detection with a theoretical value consistent with observations assuming its size and/or density is slightly larger than the nominally expected values

Dexketoprofen/tramadol 25 mg/75 mg: randomised double-blind trial in moderate-to-severe acute pain after abdominal hysterectomy

Statistical Analysis of TOTPAR over 2, 4, 6 and 8 h (ANCOVA) (ITT Population) (single-dose phase). (DOCX 16 kb

Formation of asteroid pairs by rotational fission

Asteroid pairs sharing similar heliocentric orbits were found recently. Backward integrations of their orbits indicated that they separated gently with low relative velocities, but did not provide additional insight into their formation mechanism. A previously hypothesized rotational fission process4 may explain their formation - critical predictions are that the mass ratios are less than about 0.2 and, as the mass ratio approaches this upper limit, the spin period of the larger body becomes long. Here we report photometric observations of a sample of asteroid pairs revealing that primaries of pairs with mass ratios much less than 0.2 rotate rapidly, near their critical fission frequency. As the mass ratio approaches 0.2, the primary period grows long. This occurs as the total energy of the system approaches zero requiring the asteroid pair to extract an increasing fraction of energy from the primary's spin in order to escape. We do not find asteroid pairs with mass ratios larger than 0.2. Rotationally fissioned systems beyond this limit have insufficient energy to disrupt. We conclude that asteroid pairs are formed by the rotational fission of a parent asteroid into a proto-binary system which subsequently disrupts under its own internal system dynamics soon after formation.Comment: 12 pages, 2 figures, 1 table + Supplementary Informatio