Publications

What is the impact of uncommon but notable violent acts on conflict dynamics? We analyze the impact of the murder of a Palestinian child on the broader dynamics of Israeli-Palestinian violence in Jerusalem. By using novel micro-level event data and utilizing Discrete Furrier Transform and Bayesian Poisson Change Point Analysis, we compare the impact of the murder to that of two other lethal but more typical Israeli-Palestinian events. We demonstrate that the murder had a large and durable effect that altered the broader conflict dynamics, whereas the other events caused smaller, short-term effects. We demonstrate that scholars should devote more attention to the analysis of atypical violent acts and present a set of tools for conducting such analysis.

CEE countries faced significant political, economic, social, and technological transformations over the last four decades. Democratic processes, after relative stabilization, tremble again around polarizing values, populist leaders, or nationalistic ideologies. Online communication, especially social media platforms, play a vital role in shaping how citizens interact with the state, political actors, media, and other citizens. The collection of manuscripts focuses on some of the challenges democratic institutions in the region face, in transforming and sustaining civil society and attempts to capture how the digital media environments mitigate or exacerbate those challenges. Included manuscripts focus on the role that online platforms play in the satisfaction with democracy in the CEE region, the interactions between journalists and political actors, the strategic media coverage of elections, affective polarization and political antagonism, and discursive attempts to discourage young people from civic engagement.

How do religious citizens’ election projections influence voter turnout? While previous studies have demonstrated the significant impact of religious orientation on individuals’ general future outlook, little is known about the influence of religion on voters’ electoral expectations and how these expectations affect voter turnout. In this paper, we employ a nuanced conceptual framework of election projections and examine the impact of religion on both the affective and probabilistic aspects of citizens’ expectations regarding election outcomes. Our analysis draws upon original panel survey data collected in two countries, focusing on the 2021 Israeli general elections and the 2022 French presidential elections. The findings reveal a mobilizing effect of religious citizens’ election projections in both Israel and France. Specifically, religious voters tend to have more positive affective forecasts about their projected election outcomes, consequently resulting in increased voter turnout. While affective forecasting plays a significant role in religious citizens’ turnout, probabilistic certitude does not have a similar effect. We discuss the contribution and implications of these findings for research on religion and political behavior.

We introduce and implement a novel dimension-reduction method for high-dimensional time-varying contingency-tables: the Evolutionary Correspondence Analysis (ECA). ECA enables a comparative analysis of high-dimensional, diachronic processes by identifying a small number of shared latent variables that shape co-evolving data patterns. ECA offers new opportunities for the study of complex social phenomena, such as co-evolving public debates: Its capacity to inductively extract time-varying latent variables from observed contents of evolving debates permits an analysis of meanings shared by linked sub-discourses, such as linked national public spheres or the discourses led by distinct political camps within a shared public sphere. We illustrate the utility of our approach by studying how the Greek and German right-, centre-, and left-leaning news coverage of the European financial crisis evolved between its outbreak in 2009 until its institutional containment in 2012. Comparing the use of 525 unique concepts in six German and Greek outlets with different political leaning over an extended period of time, we identify two common factors accounting for those evolving meanings and analyse how the different sub-discourses influenced one another over time. We allow the factor loadings to be time-varying, and fit to the latent factors a time-varying vector-auto-regressive model with time-varying mean.

The generation and control of large amplitude plasma gratings and other plasma structures is of paramount importance for the realization of plasma photonics. Autoresonant excitation of such structures by means of chirped amplitude-modulated lasers has been recently discussed and analyzed theoretically. Here we discuss the parameter space for the realization of such a scheme and describe the laser system that was built towards this goal. We also expand our earlier theoretical study to account for the more realistic case of a moderately focused laser beam, instead of the simplified plane wave approximation.

Do the leaders of minority communities in divided cities influence group members’ expressed willingness to engage politically with rival groups? Studies typically  link group members' willingness to engage with rival groups to direct contact between individuals from opposing groups. However, such contact is problematic in divided cities, wherein opportunities to interact are scarce and frowned upon. Focusing on the contested urban space of Jerusalem, we find indications that the diverse nature of community leadership in East Jerusalem can influence Palestinian residents’ attitudes toward political engagement with Israeli Authorities via The ‘middlemen’ role can explain the influence that have in divided cities. They their constituents and the other group's members or institutions. Our analysis employs original data from a public of East Jerusalem immediately prior to the Jerusalem 2018 It has ramifications regarding urban governance for other divided cities.

There is a need to shift the absorbance of biomolecules to the optical transparency window of tissue for applications in optogenetics and photo-pharmacology. There are a few strategies to achieve the so-called red shift of the absorption maxima. Herein, a series of 11 merocyanine dyes were synthesized and employed as chromophores in place of retinal in bacteriorhodopsin (bR) to achieve a bathochromic shift of the absorption maxima relative to bR’s \({\lambda }_{\mathrm{max}}^{a}\) of 568 nm. Assembly with the apoprotein bacterioopsin (bO) led to stable, covalently bound chromoproteins with strongly bathochromic absorbance bands, except for three compounds. Maximal red shifts were observed for molecules 9, 2, and 8 in bR where the \({\lambda }_{\mathrm{max}}^{a}\) was 766, 755, and 736 nm, respectively. While these three merocyanines have different end groups, they share a similar structural feature, namely, a methyl group which is located at the retinal equivalent position 13 of the polyene chain. The absorption and fluorescence data are also presented for the retinal derivatives in their aldehyde, Schiff base (SB), and protonated SB (PSB) forms in solution. According to their hemicyanine character, the PSBs and their analogue bRs exhibited fluorescence quantum yields (Φ_f) several orders of magnitude greater than native bR (Φ_f 0.02 to 0.18 versus 1.5 × 10^–5 in bR) while also exhibiting much smaller Stokes shifts than bR (400 to 1000 cm⁻¹ versus 4030 cm⁻¹ in bR). The experimental results are complemented by quantum chemical calculations where excellent agreement between the experimental \({\lambda }_{\mathrm{max}}^{a}\)and the calculated \({\lambda }_{\mathrm{max}}^{a}\) was achieved with the second-order algebraic-diagrammatic construction [ADC(2)] method. In addition, quantum mechanics/molecular mechanics (QM/MM) calculations were employed to shed light on the origin of the bathochromic shift of merocyanine 2 in bR compared with native bR.

Scholarly efforts to identify core design features for effective teacher professional development have grown rapidly in the last 25 years. Many concise lists of design principles have emerged, most of which converge on a consensus of 5-7 presumably "effective” design features (e.g., collaborative tasks, focus on content, active learning). The proliferation and convergence of reviews create the impression that this consensus is based on strong evidence from large-scale, replicated and rigorously controlled research studies. We critique the empirical foundation on which conclusions about evidence-based design features for teacher professional development have been based, by the same evidential standards that have been adopted within this field of scholarly work. We conclude that the empirical foundations for these lists are problematic and that claims to methodological rigor are misleading as they are based on flawed inferences. We further argue that the ambition to identify general features of effective professional development is also problematic, and reflect on why, despite its weaknesses and potentially adverse consequences for research and practice, we as a field continue to herald this consensus. We call for greater focus on the development, testing and refinement of theories about teacher professional learning in order to advance understanding, policy and practice in the field.