Optical Force on a Metal Nanorod Exerted by a Photonic Jet

In this article, we study the optical force exerted on nanorods. In recent years, the capture of micro-nanoparticles has been a frontier topic in optics. A Photonic Jet (PJ) is an emerging subwavelength beam with excellent application prospects. This paper studies the optical force exerted by photonic jets generated by a plane wave illuminating a Generalized Luneburg Lens (GLLs) on nanorods. In the framework of the dipole approximation, the optical force on the nanorods is studied. The electric field of the photonic jet is calculated by the open-source software package DDSCAT developed based on the Discrete Dipole Approximation (DDA). In this paper, the effects of the nanorods’ orientation and dielectric constant on the transverse force Fx and longitudinal force Fy are analyzed. Numerical results show that the maximum value of the positive force and the negative force are equal and appear alternately at the position of the photonic jet. Therefore, to capture anisotropic nanoscale-geometries (nanorods), it is necessary to adjust the position of GLLs continuously. It is worth emphasizing that manipulations with nanorods will make it possible to create new materials at the nanoscale.

Nationalism is dead, long live nationalism! In pursuit of pluralistic nationalism: A critical overview

Rather than vilifying or rejecting it, an increasing number of scholars from two seemingly anti-nationalist cohorts, namely liberal political theory and multiculturalism, have come to argue that nationalism is not intrinsically illiberal or undesirable, but some forms of it (e.g. liberal, multicultural, pluralistic) can be a positive force to meet the demands for nation-building, national identity and national culture, on the one hand, and demands for recognition, respect and accommodation of diversity, on the other. This paper critically examines recent scholarly literature on liberal nationalism and multicultural nationalism. It argues that both projects have developed necessary responses to (1) growing diversity and (2) ethnonational and populist-majoritarian forms of nationalism and hence, are welcome. However, two substantial shortcomings need to be addressed. The first is the nation-building–education nexus and the limits of multicultural education (e.g. the teaching of history), and the second is the nationalism–transnationalism nexus or the normative desirability of dual nationalities. The paper concludes that a morally acceptable form of nationalism (e.g. pluralistic, inclusive or moderate) operating within multi-national and multicultural liberal democracies is theoretically possible, yet its viability is related to the extent to which it addresses the two issues raised, amongst others.

Konsep Memaafkan dalam Psikologi Positif

Forgiveness is a very important positive force that exists within a person so as not to always be trapped in a negative emotional state which can proceed to release all negative emotions such as feelings of anger, feelings of hatred, hurt and even the desire to take revenge for others. how others treat us. Forgiveness is also included in a concept contained in the study of positive psychology which according to Martin Seligman that positive psychology does not only focus on a person's weakness or mental illness but also focuses on the positive strengths possessed by each person to regulate these negative emotions into a positive emotion. One way to develop yourself is by forgiving. Forgiveness has a very important role in a person's mental health, where when an individual is having feelings of anger, hurt, disappointment, and feelings of hatred towards others, this can increase the negative emotions that exist within the individual which can later cause stress. frustration, sadness and even the desire to take revenge against someone because they have harbored these negative emotions for too long which are eventually released with revenge. Forgiveness is very important because forgiving is a way to release all negative emotions that exist in a person and when successfully released it will have positive impacts that can be felt by the person, especially the positive impact on his mental health, which forgiveness will create feelings a person becomes more relieved, feels better, and the mood becomes calmer and more comfortable, therefore forgiveness is very important to do. The purpose of thr journal writing is, 1) to understand the concept of forgiveness within positive psychology, 2) understanding the relationship between forgivrness and mental health, 3) understanding the importance of forgiveness toward mental health.Descriptive qualitative writing method used in this study is to describe several important concepts that will be discussed so that they are clearer and easier to understand. The results of the study show that people who always forgive will make themselves calmer and make the quality of their lives better because basically forgiveness has a very clear urgency, especially in a person's mental health condition.

The paradox of the peasantry in management and organization studies

Purpose Burrell (2020) challenged management and organization studies (MOS) scholars to pay attention to a topic they have mostly ignored: the peasantry, those 2 billion people that work in the rural primary sector. This paper aims to address the topic to expand Burrell’s challenge by indicating that the peasantry offers a unique context to study a paradoxical condition: the coexistence of persistent poverty and vanguardist innovation. Design/methodology/approach The authors advance conceptual arguments that complement the reasons why researchers should pay more attention to the peasantry. They argue that continuation of past research into field laborers, transitioning from feudalism to industrial capitalism, still has currency, not just because of the good reasons listed by Burrell (enduring relevance of the phenomenon in developing countries; sustainability concerns; acknowledgment of common heritage) but also because some seemingly archaic practices are evident in the economically developed countries where most management and organizations scholars live. Findings The authors show that in advanced economies, the peasantry has not disappeared, and it is manifested in contradictory forms, as positive force contributing to sustainable productivity (in the case of digitized agriculture) and as a negative legacy of social inequality and exploitation (as a form of modern slavery). Originality/value The authors discuss contrasting themes confronting management of the peasantry, namely, modern slavery and digital farming, and propose that a paradox view may help overcome unnecessary dualisms, which may promote social exclusion rather than integrated development.

An agent based force vector model of social influence that predicts strong polarization in a connected world

The model is based on a vector representation of each agent. The components of the vector are the key continuous “attributes” that determine the social behavior of the agent. A simple mathematical force vector model is used to predict the effect of each agent on all other agents. The force law used is motivated by gravitational force laws and electrical force laws for dipoles. It assumes that the force between two agents is proportional to the “similarity of attributes”, which is implemented mathematically as the dot product of the vectors representing the attributes of the agents, and the force goes as the inverse square of the difference in attributes, which is expressed as the Euclidean distance in attribute space between the two vectors. The force between the agents may be positive (attractive), zero, or negative (repulsive) depending on whether the angle between the corresponding vectors is less than, equal to, or greater than 90°. A positive force causes the attributes of the agents to become more similar and the corresponding vectors to become more nearly parallel. Interaction between all agents is allowed unless the distance between the attributes representing the agents exceeds a confidence limit (the Attribute Influence Bound) set in the simulation. Agents with similar attributes tend to form groups. For small values of the Attribute Influence Bound, numerous groups remain scattered throughout attribute space at the end of a simulation. As the Attribute Influence Bound is increased, and agents with increasingly different attributes can communicate, fewer groups remain at the end, and the remaining groups have increasingly different characteristic attributes and approximately equal sizes. With a large Attribute Influence Bound all agents are connected and extreme bi- or tri-polarization results. During the simulations, depending on the initial conditions, collective behaviors of grouping, consensus, fragmentation and polarization are observed as well as certain symmetries specific to the model, for example, the average of the attributes for all agents does not change significantly during a simulation.

Sovereignty, Prefigurative Politics, and Basques’ Joy to Decide

The literature about Basque politics and the anthropology of sovereignty often define the political within the boundaries of violence, desire, and statehood: a sort of pessimism pervades the general assumptions and the end results. In this article, I shift the focus to a different aspect of the problem of sovereignty, drawing on ethnographic research about a Basque social movement that asserts self-determination in terms of a democratic and pacifist ‘Right to Decide’. Exploring the movement’s organization, daily activities, performances, sociality, and discourses, I argue that they prefigure political pleasure in a way that encourages the performance of sovereignty as a positive force. I show how the movement creates an environment in which producing sovereignty becomes a joyful experience.

Influence of social entrepreneurs on community development in Enugu west senatorial district of Enugu state, Nigeria

Social entrepreneurship is not a new-fangled observable fact in Nigeria. Though the practice has constantly existed, for countless reasons, the concept is gaining reputation in current years. Although the focus has been on business entrepreneurship as a tool for economic development, the light is now on social entrepreneurship, which entails attempting to serious social issues for sustainable community development. Community development efforts have met with diverse challenges that hamper sustainability of the society. The appearance of social entrepreneurship as a cross move towards positive force for transforming communities put forwards the prospects of dealing with the key challenges of lack of support by government, deficiency of financial assistant, changing environment, out of pocket work, domination by wealthy founders and philanthropists, lack of skilled manpower, poverty, unemployment, illiteracy, climate changes, health care challenges, insecurity and other social and economic issues. This paper throws light on who social entrepreneurs are what they do and the role they play in achieving sustainable community development. Using a conceptual framework defined social entrepreneurs, characteristics, principles and role of social entrepreneurs towards community development process. The paper concludes with suggestive principles that could provide an enhanced insight on the role of social entrepreneurs in community development. To enhance their impact, social entrepreneurs should involve beneficiaries trapped within socio-economic problems in the process of community development.

The Qatar crisis: Challenges and opportunities

This study reviews the challenges and opportunities encountered by Qatar because of the blockade imposed by the neighboring countries, namely Saudi Arabia, the United Arab Emirates (UAE), Bahrain, and Egypt. It endeavors to highlight potential scenarios of the crisis. This paper employs a secondary source of information to achieve the objectives, such as books, articles, reports, and academic research, which were later subjected to thematic analysis. The findings of this research reveal that crisis management was an effective strategy implemented by the Qatari Government. It helped Qatari officials to change and transfer the negative impacts to a positive force. The crisis management strategy encouraged Qatar to rely on their local industries, improve education and media institutes, and use Qatar’s soft power internationally. Although 2017 was a challenging year for Qatar due to the crisis, yet the national economy showed an accelerated growth of 5% in the second half of the same year.

Political Discourse and Public Attitudes toward Syrian Refugees in Turkey

Sustaining positive attitudes toward refugees is a priority as refugee crises surge worldwide. This study draws on eighty-five in-depth interviews with citizens in four provinces across Turkey. We identified prominent frames from Turkish political discourse and asked individuals to recount their self-narratives of attitude formation about Syrian refugees. We find that most respondents’ narratives included multiple frames, confirming that attitudes are often products of contradictory factors. Furthermore, humanitarianism and shared religion, frames thought to support positive attitudes, did not have such straightforward associations here. Humanitarianism was a positive force early, but had limits as compassion fatigue set in, and respondents described polarizing differences in religious practices rather than shared religion. Our work highlights the importance of examining attitude formation in non-Western settings for understanding views about and supporting societal inclusion of refugees.