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Topic Review
Abecedarian: An Impossible Model Preschool Program
The primary goal of pre- and early-school programs is to prevent young children from socioeconomically disadvantaged backgrounds to start school already with educational delays. The programs offer compensatory stimulation activities which are supposed to be not available in the home situation; the focus is on language development. Proponents claim that such programs can be effective, provided they are of high quality. The belief in their success is very much based on the outcomes of a few so-called model programs from the 1960s and 1970s. One of these programs is the Carolina Abecedarian Project, a small single-site project started in 1972. Four cohorts of in total 111 children and their poor, Black parents participated in this experiment with a random allocated treatment and control group. The children were followed from 6 weeks after birth to 6 years of age, that is, when they entered school. They were regularly tested and observed, and then after the program had ended again until they were 40 years of age.
  • 2.8K
  • 14 Jan 2024
Topic Review
Multiple Attribute-based Decision-making Models
Sustainability of agricultural practices depends on economic, environmental, and social conditions. The Rajasthan state of India has arid climatic conditions where kharif crops are commonly grown. In this work, the four major criteria are considered such as the farm area, crop yield per unit area, the cost prices, and the market sales price. Merged analytic hierarchy process (AHP) and entropy techniques have been employed to give reasonable weight coefficients for the objective and subjective weights to each criterion. Multiple attribute-based decision-making models (MADM) have been developed using three proven techniques, namely the Exprom2, the technique for order of preference by similarity to ideal solution (TOPSIS), and the VlseKriterijumska Optimizacija I KompromisnoResenje (VIKOR). The crop Pennisetum glaucum emerged as the most productive kharif crop in the arid climatic conditions of Rajasthan, India under the given criteria. The sensitivity analysis of the three methods identifies the most significant criteria and validates that Pennisetum glaucum is the first ranked crop despite the interchange of the weights. The methodology used in this study may be applied across the globe to select appropriate crops for maximizing the profit, optimizing the natural resources, and promoting sustainable agricultural practices. This study may be used to enhance the agricultural gross domestic product (GDP) to make the agriculturalists self-sufficient and to help the state policymakers in making elective regional policies.
  • 2.8K
  • 05 Nov 2020
Topic Review
Mixture Designs of Experiments
The experimental designs for mixtures are a subclass of experimental designs useful for studying the effects of ingredients/components in formulations. 
  • 2.8K
  • 04 Jun 2021
Topic Review
Aggregation-Induced Emission Active Materials
The emergence and development of aggregation induced emission (AIE) have attracted worldwide attention due to its unique photophysical phenomenon and for removing the obstacle of aggregation-caused quenching (ACQ) which is the most detrimental process thereby making AIE an important and promising aspect in various fields of fluorescent material, sensing, bioimaging, optoelectronics, drug delivery system, and theranostics. hexaphenylsilole (HPS) is the common example of the AIE active molecule which exhibits enhancement in fluorescence in an aggregate state. The motions involved, such as restriction of intramolecular motion along with rotation and vibration mechanisms in the AIE active phenomenon, are well explained and accepted. The AIE luminogens have high photostability, large stoke shift, a photobleaching resistance property, and show high sensing reproducibility. This characteristic makes luminogens a promising candidate for sensing application
  • 2.8K
  • 19 Apr 2022
Topic Review
Technology Transfer Challenges in the Renewable Energy Sector
The use of fossil fuels to generate energy is often associated with serious negative effects on the environment. The greenhouse gas emissions resulting from burning these fuels destroy the ozone layer and lead to global warming. As a strategic approach to the solution of this problem, calls for research and development, as well as the implementation of technologies associated with renewable energy sources within the European Union (EU), have intensified in recent years.
  • 2.8K
  • 07 Apr 2022
Topic Review
Bone: An Outstanding Composite Material
Bone is an outstanding, well-designed composite. It is constituted by a multi-level structure wherein its properties and behavior are dependent on its composition and structural organization at different length scales. The combination of unique mechanical properties with adaptive and self-healing abilities makes bone an innovative model for the future design of synthetic biomimetic composites with improved performance in bone repair and regeneration. 
  • 2.8K
  • 16 May 2022
Topic Review
Combo Washer Dryer
A combo washer dryer (also known more simply as a washer-dryer in the United Kingdom ) is a combination in a single cabinet of a washing machine and a clothes dryer. It should not be confused with a "stackable" combination of a separate washing machine and a separate clothes dryer.
  • 2.8K
  • 08 Nov 2022
Topic Review
Lung Cancer
Currently, lung cancer is a disease that acquired an impressive change in the clinical manangement due to the recent inovations regarding targeted therapies and immunne check point inhibitors.
  • 2.8K
  • 17 Apr 2021
Topic Review
Power Domain-NOMA
In the current era of exponentially growing demand for user connectivity, spectral efficiency (SE), and high throughput, the performance goals have become even more challenging in ultra-dense 5G networks. The conventional orthogonal frequency division multiple access (OFDMA) tech-niques are mature but have not proven sufficient to address the growing user demand for high data rates and increased capacity. Therefore, to achieve an improved throughput in an ultra-dense 5G network with an expanded network capacity, the unified non-orthogonal multiple access (NOMA) technique is considered to be a more promising and effective solution. Throughput can be im-proved by implementing PD-NOMA, as the interference is managed with the successive inter-ference cancellation (SIC) technique, but the issue of increased complexity and capacity with compromised data rate persists.
  • 2.8K
  • 30 May 2022
Topic Review
Fuel Energy
Most fuels are natural compounds, such as petro fuel, diesel, and natural gas, either taken directly from the ground or refined from petroleum. Fuels can be categorized according to various forms. They are classified as solid, liquid, and gaseous fuels based on their physical appearance. Primary and secondary sub-classifications categorize wood, coal, and peat as primary fuels and coke and charcoal as secondary solid fuels. Similarly, petroleum is a primary liquid fuel; diesel, gasoline, kerosene, LPG, ethanol, and biodiesel are secondary biofuels. Finally, there is another category of fuels similar to gaseous fuels, in which natural gas is a perfect sample of primary gaseous fuel. On the other hand, hydrogen, propane, methane, coal gas, and water gas are secondary gaseous fuels. In addition, petrol, gas oil, diesel fuel, fuel oils, aviation fuel, jet fuel, and marine fuel are typical forms of fuel. Another classification is based on the purpose of fuel. For example, materials burnt to generate nuclear energy are called nuclear fuels, and those producing heat are called thermal fuels. The burning of plutonium produces nuclear energy. When burning coal, wood, oil, or gases, they produce heat.
  • 2.8K
  • 30 Jan 2023
Topic Review Peer Reviewed
Fostering Organizational Sustainability Through Employee Collaboration: An Integrative Approach to Environmental, Social, and Economic Dimensions
This study aims to develop a multifaceted conceptual basis for employee collaboration with regard to promoting organizational sustainability, which encompasses environmental, social, and economic dimensions. Employing a mixed-methods framework, the study integrates a thorough literature review with a qualitative content analysis. A distinctive feature of this investigation is its emphasis on incorporating collaborative methodologies into sustainability strategies across various organizational frameworks, illustrating how collaboration can be refined through adaptive leadership, interdisciplinary teams, and digital technologies. The results indicate that organizations characterized by a robust collaborative culture demonstrate greater success in fostering sustainable innovations, minimizing environmental repercussions, and enhancing employee engagement. Furthermore, the study introduces a novel model that correlates collaboration with operational sustainability, taking into account diverse levels of resource sharing, leadership engagement, and employee empowerment. By focusing on actionable strategies, this research provides novel insights into how adaptive leadership, digital tools, and shared responsibility can transform collaboration into a driver of sustainability. This research enriches the existing body of literature by presenting an evidence-based framework for cultivating sustainable organizational cultures and provides valuable insights for prospective research on harnessing collaboration to attain long-term sustainability goals.
  • 2.8K
  • 02 Dec 2024
Topic Review
Tyrosinase and Melanogenesis Inhibition
Melanin is a widespread natural pigment that is responsible for color in hair, skin, and eyes. It provides protection against the deleterious effects of ultraviolet (UV) irradiation. Melanogenesis is the physiological process of melanin formation in which TYR, a copper-dependent enzyme, initiates the first step. Tyrosinase catalyzes the rate-limiting step where L-tyrosine is converted to L-3,4,-dihydroxyphenylalanine (L-DOPA), leading to the eventual formation of the pigment.
  • 2.8K
  • 27 Oct 2020
Topic Review
Static Single Assignment Form
In compiler design, static single assignment form (often abbreviated as SSA form or simply SSA) is a property of an intermediate representation (IR), which requires that each variable be assigned exactly once, and every variable be defined before it is used. Existing variables in the original IR are split into versions, new variables typically indicated by the original name with a subscript in textbooks, so that every definition gets its own version. In SSA form, use-def chains are explicit and each contains a single element. SSA was proposed by Barry K. Rosen, Mark N. Wegman, and F. Kenneth Zadeck in 1988. Ron Cytron, Jeanne Ferrante and the previous three researchers at IBM developed an algorithm that can compute the SSA form efficiently. One can expect to find SSA in a compiler for Fortran, C or C++, whereas in functional language compilers, such as those for Scheme and ML, continuation-passing style (CPS) is generally used. SSA is formally equivalent to a well-behaved subset of CPS excluding non-local control flow, which does not occur when CPS is used as intermediate representation. So optimizations and transformations formulated in terms of one immediately apply to the other.
  • 2.8K
  • 28 Nov 2022
Topic Review
Social Vulnerability of Landslide Hazard
Landslides represent one of the world’s most dangerous and widespread risks, annually causing thousands of deaths and billions of dollars worth of damage. Building on and around hilly areas in many regions has increased, and it poses a severe threat to the physical infrastructure and people living within such zones. Quantitative assessment of social vulnerability is worrying because it has been given less attention than hazard-related studies.
  • 2.8K
  • 15 Apr 2021
Topic Review
Applications of Flexible Strain Sensors
Based on the ingenious design and distinguished performance of the reported flexible strain sensors, there are a great deal of applications that have been demonstrated for various occasions. The in vitro detections for human health and implantable in vivo devices for biomedical engineering, as well as human-machine interface and soft robotics applications are reviewed. 
  • 2.8K
  • 11 May 2021
Topic Review
California Electricity Crisis
The California electricity crisis, also known as the Western U.S. energy crisis of 2000 and 2001, was a situation in which the United States state of California had a shortage of electricity supply caused by market manipulations and capped retail electricity prices. The state suffered from multiple large-scale blackouts, one of the state's largest energy companies collapsed, and the economic fall-out greatly harmed Governor Gray Davis's standing. Drought, delays in approval of new power plants,:109 and market manipulation decreased supply. This caused an 800% increase in wholesale prices from April 2000 to December 2000.:1 In addition, rolling blackouts adversely affected many businesses dependent upon a reliable supply of electricity, and inconvenienced many retail consumers. California had an installed generating capacity of 45 GW. At the time of the blackouts, demand was 28 GW. A demand-supply gap was created by energy companies, mainly Enron, to create an artificial shortage. Energy traders took power plants offline for maintenance in days of peak demand to increase the price. Traders were thus able to sell power at premium prices, sometimes up to a factor of 20 times its normal value. Because the state government had a cap on retail electricity charges, this market manipulation squeezed the industry's revenue margins, causing the bankruptcy of Pacific Gas and Electric Company (PG&E) and near bankruptcy of Southern California Edison in early 2001.:2–3 The financial crisis was possible because of partial deregulation legislation instituted in 1996 by the California Legislature (AB 1890) and Governor Pete Wilson. Enron took advantage of this deregulation and was involved in economic withholding and inflated price bidding in California's spot markets. The crisis cost between United States dollar 40 and $45 billion.:3–4
  • 2.8K
  • 10 Nov 2022
Topic Review
Gold(I)-Catalyzed Approaches with Arylalkyne Activation
Gold catalysts possess the advantages of water and oxygen resistance, with the possibility of catalyzing many novel chemical transformations, especially in the syntheses of small-molecule skeletons, in addition to achieving the rapid construction of multiple chemical bonds and ring systems in one step.
  • 2.8K
  • 14 Feb 2023
Topic Review
Artificial Intelligence in the Agriculture
Artificial intelligence (AI) involves the development of algorithms and computational models that enable machines to process and analyze large amounts of data, identify patterns and relationships, and make predictions or decisions based on that analysis. AI has become increasingly pervasive across a wide range of industries and sectors, with healthcare, finance, transportation, manufacturing, retail, education, and agriculture are a few examples to mention. As AI technology continues to advance, it is expected to have an even greater impact on industries in the future. For instance, AI is being increasingly used in the agri-food sector to improve productivity, efficiency, and sustainability.
  • 2.8K
  • 23 May 2023
Topic Review
Gender-bias in Medical Diagnosis
Gender-biased diagnosing is a controversial sociological observation which asserts that medical and psychological diagnosis may be influenced by the gender of the patient. Several studies have found evidence of differential diagnosis for patients with similar ailments but of different sexes.
  • 2.8K
  • 20 Oct 2022
Topic Review
Electric Vehicles in Hong Kong
The adoption of electric vehicles in Hong Kong is actively supported by the HK government, which recognizes battery electric vehicles, plug-in hybrids, and conventional hybrid electric vehicles to be environmentally friendly and eligible for financial incentives. As of 31 October 2017, there were 11,039 electric vehicles in Hong Kong, up from less than 100 in 2010. At present, 73 EV models from eight countries have been approved by the Transport Department to be eligible for the incentives. These include 51 models for private cars and motorcycles and 22 models for public transport and commercial vehicles.
  • 2.8K
  • 21 Nov 2022
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