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Topic Review
Decline of Christianity
The decline of Christianity is an ongoing trend in Europe. Developed countries with good educational facilities in the post-World War II era have shifted towards post-Christian, secular, globalized, multicultural and multifaith societies. Infant baptism has declined in many nations, with thousands of churches closing or merging due to lack of attendees. There is also evidence of decline in North America. Despite the decline, Christianity remains the dominant religion in the Western world, where 70% of the population is nominally Christian.
  • 6.7K
  • 11 Nov 2022
Topic Review
Erikson's Stages of Psychosocial Development
Erikson's stages of psychosocial development, as articulated in the second half of the 20th century by Erik Erikson in collaboration with Joan Erikson, is a comprehensive psychoanalytic theory that identifies a series of eight stages that a healthy developing individual should pass through from infancy to late adulthood. According to Erikson’s theory the results from each stage, whether positive or negative, influences the results of succeeding stages. Erikson published a book called Childhood and Society around the 1950s that made his research well known on the eight stages of psychosocial development. Erikson was originally influenced by Sigmund Freud’s psychosexual stages of development. He began by working with Freud's theories specifically, but as he began to dive deeper into biopsychosocial development and how other environmental factors affect human development, he soon progressed past Freud’s theories and developed his own ideas. Erikson's stage theory characterizes an individual advancing through the eight life stages as a function of negotiating their biological and sociocultural forces. The two conflicting forces each have a psychosocial crisis which characterizes the eight stages. If an individual does indeed successfully reconcile these forces (favoring the first mentioned attribute in the crisis), they emerge from the stage with the corresponding virtue. For example, if an infant enters into the toddler stage (autonomy vs. shame and doubt) with more trust than mistrust, they carry the virtue of hope into the remaining life stages. The challenges of stages not successfully completed may be expected to return as problems in the future. However, mastery of a stage is not required to advance to the next stage. In one study, subjects showed significant development as a result of organized activities.
  • 6.7K
  • 20 Oct 2022
Topic Review
Coffee By-Products
The coffee plant Coffea spp. offers much more than the well-known drink made from the roasted coffee bean. During its cultivation and production, a wide variety of by-products are accrued, most of which are currently unused, thermally recycled, or used as animal feed.
  • 6.7K
  • 02 Nov 2020
Topic Review
Vascular bundles
Vascular bundles play important roles in transporting nutrients, growth signals, amino acids, and proteins between aerial and underground tissues. 
  • 6.7K
  • 26 Feb 2021
Topic Review
Intergalactic Space
Outer space, or simply space, is the expanse that exists beyond the Earth and between celestial bodies. Outer space is not completely empty—it is a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is 2.7 kelvins (−270.45 °C; −454.81 °F). The plasma between galaxies accounts for about half of the baryonic (ordinary) matter in the universe; it has a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvins. Local concentrations of matter have condensed into stars and galaxies. Studies indicate that 90% of the mass in most galaxies is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Observations suggest that the majority of the mass-energy in the observable universe is dark energy, a type of vacuum energy that is poorly understood. Intergalactic space takes up most of the volume of the universe, but even galaxies and star systems consist almost entirely of empty space. Outer space does not begin at a definite altitude above the Earth's surface. However, the Kármán line, an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which entered into force on 10 October 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit. Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights. This was followed by manned rocket flights and, then, manned Earth orbit, first achieved by Yuri Gagarin of the Soviet Union in 1961. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon. On the other hand, unmanned spacecraft have reached all of the known planets in the Solar System. Outer space represents a challenging environment for human exploration because of the hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is very high.
  • 6.7K
  • 23 Nov 2022
Topic Review
Phanerozoic
The Phanerozoic Eon is the current geologic eon in the geologic time scale, and the one during which abundant animal and plant life has existed. It covers 541 million years to the present and began with the Cambrian Period when animals first developed hard shells preserved in the fossil record. The time before the Phanerozoic, called the Precambrian, is now divided into the Hadean, Archaean and Proterozoic eons. The time span of the Phanerozoic starts with the sudden appearance of fossilized evidence of a number of animal phyla; the evolution of those phyla into diverse forms; the emergence and development of complex plants; the evolution of fish; the emergence of insects and tetrapods; and the development of modern fauna. Plant life on land appeared in the early Phanerozoic eon. During this time span, tectonic forces caused the continents to move and eventually collect into a single landmass known as Pangaea (the most recent supercontinent), which then separated into the current continental landmasses.
  • 6.7K
  • 08 Oct 2022
Topic Review
Feminist Political Economy
Feminist political economy is a concept from feminist material scholarship.  It connects market relations with domestic relations. It examines the roles of women, tensions related to women’s paid and unpaid work, how production and reproduction issues affect women, and the interactions at the micro, meso, and macro level contexts within women's lives.  
  • 6.7K
  • 28 Oct 2020
Topic Review
Video Game Live Streaming
Video game live streaming is a kind of real-time video social media that integrates traditional broadcasting and online gaming. Real-time, sociability and suspense are the main features of video game live streaming. Video game live streaming can meet user demands in social integration, personal integration, tension release, affection, and cognition. In order to have a more comprehensive understanding of video game live streaming, the following text summarizes the background from the live streaming industry and research status. After that, the definition, users, features and community classification of video game live streaming are introduced in detail.
  • 6.7K
  • 02 Nov 2020
Topic Review
Magnetic Potential
The term magnetic potential can be used for either of two quantities in classical electromagnetism: the magnetic vector potential, or simply vector potential, A; and the magnetic scalar potential ψ. Both quantities can be used in certain circumstances to calculate the magnetic field B. The more frequently used magnetic vector potential is defined so that its curl is equal to the magnetic field: [math]\displaystyle{ \nabla \times \mathbf{A}=\mathbf{B}\, }[/math]. Together with the electric potential φ, the magnetic vector potential can be used to specify the electric field E as well. Therefore, many equations of electromagnetism can be written either in terms of the fields E and B, or equivalently in terms of the potentials φ and A. In more advanced theories such as quantum mechanics, most equations use potentials rather than fields. The magnetic scalar potential ψ is sometimes used to specify the magnetic H-field in cases when there are no free currents, in a manner analogous to using the electric potential to determine the electric field in electrostatics. One important use of ψ is to determine the magnetic field due to permanent magnets when their magnetization is known. With some care the scalar potential can be extended to include free currents as well. Historically, Lord Kelvin first introduced vector potential in 1851, along with the formula relating it to the magnetic field.
  • 6.7K
  • 29 Sep 2022
Topic Review
Development Communication Policy Science
Development communication policy sciences is the study of policy issues related to development communications. These two branches of social sciences are regarded as distinct and mutually exclusive areas of study but are said to be inextricably linked. According to Nora C. Quebral (2012), the University of the Philippines Los Baños defines Development Communication as the interaction of two social process—development and communication—in any given environment. Quebral, being the "mother of development communication", initially articulated that, in 1971, Development Communication was tentatively defined as "the art and science of human communication applied to the speedy transformation of a country and the mass of its people from poverty to a dynamic state of economic growth that makes possible greater social equality and larger fulfillment of the human potential" (p. 3). Gonzales (no date) defines development as a "quest for an improved quality of life for all" and communication is used to facilitate changes in people and society so that their full potential will be realised. Grounded on the mentioned basic meanings of development and communication, development communication is defined as "the use of communication in development work". Guru (1997) adds that development communication provides a conceptual and practical framework which is meant to accelerate the process of development in all spheres of human life. It is also meant to break the wall of ignorance, thus, breaking the bonds of poverty and oppression. In 1993, Alexander Flor suggested to refine the definition of development communication including the perspective of cybernetics and general systems theory. In 1995, Alexander Flor claimed development communication as the Fifth Theory of the Press. According to the author, it is the suitable system given "the social and political structures" of the Third World and its present universal environment. In UNESCO's approaches to development communication, Jan Servaes cited "while communication on its own will not bring about change and development, neither will change happen without development communication. We need to integrate all our efforts". Flor & Ongkiko (1998) describe development communication in the book titled 'Introduction to Development Communication' as purposive as it primarily uses communication not merely to give information but practically to influence the people- the receivers of information. Nair (1993) adds that development communication brings change, education and inspiration toward development. In 2001, Quebral redefined development communication as the "art and science of human communication linked to a society's planned transformation from a state of poverty to one of dynamic socio-economic growth that makes for greater equity and the larger unfolding of individual potential". The World Bank views development communication as the "integration of strategic communication in development projects" based on a clear understanding of indigenous realities. In 2006, Bassette defined development communication as a "planned and systematic application of communication resources, channels, approaches and strategies to support the goals of socio–economic, political and cultural development". In 2007, the Rome Consensus gave this definition: "Communication for Development is a social process based on dialogue using a broad range of tools and methods. It is also about seeking change at different levels including listening, building trust, sharing knowledge and skills, building policies, debating and learning for sustained and meaningful change. It is not public relations or corporate communication." According to Dr. Florangel Rosario-Braid, a communication expert in the Philippines, development communication is defined as a "purposive approach to communication" that intends to bring about social and economic change in the lives of the greatest number of the population. Braid says Development Communication involves three key elements: (1) Communication involves people's participation, (2) Stakeholders are in active dialogue and consultation, (3) End goal should be to uphold the rights and needs of the people and to achieve "self-reliance and autonomy". Human perspectives of development come into consciousness through communication whereby social reality is negotiated culturally and politically. Communication encompasses all levels of development in society and development initiatives like in health, agriculture, family planning, etc. It is a tool for mitigating global frontiers, contrasts, and divisions and landscaping structural intricacies and dynamic transformations in this sphere—the evidences of change and their social evolution. The Communication Initiative Network defines communication in models of development. To study communication is no less than one way to study policy-making. Communication about development ensures the sustained attention to the issues and which in turn is necessary in getting the essential commitment from world leaders and the wider public to give meaning to the process. The purpose of development communication is to support sustainable change in development operations by engaging key stakeholders, specifically, to: (a) establish conducive environments for assessing risks and opportunities; (b) disseminate information [to generate knowledge, p. 14]; (c) induce behavior and social change. Communicating "development" is framed within economic growth under the Western-centric modernization for underdeveloped countries using traditional vertical (top-down), linear, one-way Sender-Message-Channel-Receiver model based on Lasswell's 1948 communication theory as monologic, persuasive information and message transfer/dissemination/diffusion or selling of ideas through mass media (e.g., advertisements, social marketing). This dominant paradigm which was opposed by the political-economic framework of dependency is in part abandoned and has taken the perspectives of "participation", "empowerment", and socio-cultural "multiplicity" for sustainable or long-term economic growth stipulated by the Millennium Development Goals. Communication is underscored for meaningful participation using horizontal, two-way (dialogic/interactive) communication principles and practices to facilitate stakeholders' engagement throughout the development process. These are captured by the 17 Global Goals to 2030 for sustainable development through social progress. Development communication as a field is defined by: (1) World Bank as "an interdisciplinary field based on empirical research that helps to build consensus while it facilitates the sharing of knowledge to achieve positive change in development initiatives. It is not only about effective dissemination of information but also about using empirical research and two-way communication among stakeholders" and key management tool in assessing socio-political risks and opportunities; and (2) First World Congress of Communication for Development in Rome on October 2006 as "a social process based on dialog using a broad range of tools and methods. It is also about seeking change at different levels, including listening, building trust, sharing knowledge and skills, building policies, debating, and learning for sustained and meaningful change. It is not public relations or corporate communication". Participation refers to people's involvement from social movement and project-based perspectives which could be passive (informed), consultative (provides feedback), functional (takes part in discussion and analysis by horizontal communication), and empowered (equal partners with external professionals in decision-making) along the ladder to change. To move into sustainability, change in people's beliefs and practices take place. However, "...change cannot occur without communication". Development communication accommodates three pillars of sustainable development: (1) ecological; (2) economic; and (3) social issues. In addition, Paolo Mefalopulos of the World Bank, believes that a four-phase methodological framework can help formulate appropriate communication strategies in development communication through (1) research, often referred to as communication-based assessment, or CBA; (2) inputs for the strategy design; (3) production of the materials and implementation of the planned activities; and (4) evaluation. Social, cultural, economic, political, technological and environmental issues and their utterances (also known as "advocacies") in the form of gender concerns, capitalism (e.g., welfare capitalism), marginalization (e.g., social welfare development), poverty, health care, climate change versus sustainable development, and social innovation are brought to public knowledge, and to a consensus for action on the interests, needs and capacities of all concerned through development communication. It also provides stakeholders access to national and local development goals and plans in a communication system where they can communicate horizontally and vertically to coordinate for resource and human development, more so to promote equal opportunities for social welfare, to seek social change involving innovations, and a higher quality of life and values of society. It is a vital part of the political and policy processes. The interface of development communication and policy sciences is the common ground for social and political actions such as reforms in order to: (1) blur discriminatory tensions, (2) reckon the benefit of change, and (3) configure disarrays of allocating equities between the government, corporations, and social sectors. They strengthen the basic framework of management sciences by adding much needed components. Policies articulate directions for their mobilization and regulatory mechanisms since it is set to be anticipatory or forward-looking that is, problems have been envisioned (predicted) at vantage points (strategic) so countermeasures can have minimal consequences. 'Legitimacy' of policies can be defined in terms of their (a) effectiveness and (b) relevance in the real world to address the multidimensional and complex problems. The policy sciences study the process of deciding or choosing and evaluate the relevance of available knowledge for the solution of particular problems. When policy scientists are concerned with government, law, and political mobilization, they focus on particular decisions. Policy scientists also study the choosing process of nongovernmental organizations and individuals and consider the significance of the current stock of knowledge for specific issues. According to Hale (2011), the central aim of policy sciences is to resolve problems [in the service of human dignity] and the diverse human, historical, and contextual element in public policy-making. This is a reiteration of the Lasswellian maxim on public policy in the following key elements: "contextual"; "problem-oriented"; "multi-method inquiry" or diverse empirical methods; "political"; "normative, welfare-oriented" in the case of social policy goals; and posing "interdisciplinarity" or moving between humanities and social sciences. Policy sciences improve decision-making by reinforcing and supporting human dignity to elide the blinders of instrumental reason by addressing the manifold of human experience. According to Laswell (1971), an adequate strategy of problem solving in policy sciences encompasses five intellectual tasks. These five tasks are performed at varying levels of insight and understanding: goal clarification; trend description; analysis of conditions; projection of developments; and invention, evaluation, and selection of alternatives. With this, the policy sciences integrate philosophy, history, science, prophecy, and commitment. Policy is the "plan of action" for administration, management and control of resources. The Evidence-Based Policy in Development Network and Overseas Development Institute provide a mirror of policy sciences on development by information exchange between stakeholders. Policy-making involves analysis of data and options to determine the "best" possible solution to the problem, weighing between welfare, health, expediency, efficiency, justice, and rights, among other things at par with understanding value judgments. The Lessons Database by the Independent Evaluation Department of the Asian Development Bank frames the rigors of balancing a variety of factors in the context of organizational and operational effectiveness. Prioritization towards sustainable development is actually based on estimates of economic and social costs, interests and power structures, scientific information, and ethics. Nair (1987) emphasized that communication can be utilized in providing service to the people. It is essential for mobilizing initiatives and providing information required for action in all fields of development such as agriculture, health and family planning, education and religion. However, MacBride Commission (1980) highlighted that adequate financing must be given to development projects. Without funds, programs of governments will not succeed. Apart from funding, there are other equally important aspects in implementing projects. Communication for Asia (CFA) shares their 5I's methodology in development communication: Inform, Instruct, Inspiration, Insist and Involvement. The 5I's means informing all stakeholders of concerns and priorities to achieve collaboration and cooperation of everyone in mutually sharing expertise and talents in serving the people. The term "policy sciences" was originally coined by Harold D. Lasswell and Daniel Lerner as an approach to understanding and solving problems that draw on and contribute to all fields of knowledge. It is a set of procedures in an integrated and comprehensive form to help clarify and secure common interests. The term "policy sciences" is in plural form to emphasize its interdisciplinary nature. Fraser (1998) elucidated the purposive nature of both development communication and policy sciences, thus intertwining their functions. Policies will greatly aid in the successful implementation of projects as they provide directions on what necessary steps to take. In the work of Alexander Flor, the term "development communication policy sciences" was not used as a whole phrase but was mentioned separately as development communication and policy sciences. He discussed the term according to the linkage of development communication and policy sciences as fundamental and traceable even before either area was afforded the status of science. Communication policy research evolved from the outset as a multi-disciplinary field and domain of various academic disciplines from sociology and political science to law and economics, resulting in the coverage of a myriad of multi-faceted topics. The choice of subjects in communication policy research is affected by sociocultural, political, economic and technological forces that determine the overall framework for communication policy and regulation as well as by the many regulatory objectives in communication. The place of communication in the development process was given a boost when Lerner (1958) wrote his famous treatise 'The Passing of the Traditional Society', in which he acknowledged that mass media growth was one of the three phases of democratic political development (Moemeka, n.d). He pointed out that the mass media had the power to create opportunity for empathy which 'disciplined western men in skills that spell modernity'. Development communication is basically communication for social change to achieve one's potential. This is embodied in Nora Quebral's (1971) definition which states that development communication is the "art and science of human communication applied to the speedy transformation of a country and the mass of its people from poverty to a dynamic state of economic growth that makes possible greater social equity and the larger fulfillment of the human potential." Quebral (2001) redefined development communication to "the art and science of human communication linked to a society's planned transformation from a state of poverty to one of dynamic socio-economic growth that makes for greater equity and the larger unfolding of individual potential." McKee (1992) emphasized that people's involvement is the key to the desired changes. Unless people see themselves as the driving force of their own development, no amount of investment or provision of technology and inputs will bring about any lasting improvements in their living standards. An important and founding impetus for communication policy research came from Harold D. Lasswell, who also figures prominently as a founding father of communication science and policy science (Rogers 1994). He argued that future advances in communication study depended upon the development of a policy focus and upon being a third voice supplying 'a competing appraisal of the images spread by self-serving sources' (Lasswell 1972:307). The conception of the policy sciences on the other hand, is more refined and extended today than at any time in the colorful history of man (Lasswell, 1971). Giving a working definition for it, he noted that policy sciences are concerned with knowledge of and in the decision processes of the public and civic order.
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  • 19 Oct 2022
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