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ASR

'''ASR''' is an initialism with multiple meanings in various fields. The following outline lists some of the most common uses:
  • In the military: [[Army Service Ribbon]] and [[Adjusted Service Rating Score]]
  • In organizations and companies: [[ASR Nederland]], [[Association for the Sociology of Religion]], [[American Sugar Refining]], [[Alpha Sigma Rho]], and [[Aid Still Required]]
  • In science: [[Ancestral sequence reconstruction]], [[Acute stress reaction]], and [[Adult sex ratio]]
  • In technology: [[Automatic speech recognition]], [[Airport surveillance radar]], [[Automotive shredder residue]], [[Aquifer storage and recovery]], and [[Anti-Slip Regulation]]
  • In computing: [[Cisco Aggregation Services Router]] and [[RWTH ASR]]
  • In transport: [[Erkilet International Airport]] and [[State Railway of Thailand ASR class]]
  • Other uses: [[Asr (prayer)]] and [[Academy at Swift River]]
For more details, see the respective sections below.

Military

Army Service Ribbon

The (ASR) is a decoration of the awarded to recognize the successful completion of initial entry training and honorable active . Established by the Secretary of the Army on 10 April 1981 and announced in Department of the Army General Orders (DAGO) 1990-15, the ASR became effective on 1 August 1981 as a ribbon-only with no accompanying or appurtenances. It is presented to members of the Active Army, , and U.S. Army Reserve in active Reserve status who meet the criteria, and it may be awarded retroactively to those in status on or after 1 August 1981 who completed qualifying training prior to that date. Eligibility for the ASR requires the successful completion of initial entry training, which includes Basic Combat Training and Advanced Individual Training for enlisted Soldiers, or branch-specific basic officer leadership courses for commissioned officers. For Soldiers whose military occupational specialty or area of concentration is based on civilian-acquired or other service-acquired skills, the ribbon is awarded after four months of honorable active Federal service instead of formal training. The service must be honorable, and the award is limited to one per individual regardless of completing multiple types of initial training, such as both enlisted and officer programs. Exclusions apply to service or training completed before 10 April 1981, subsequent periods of service after initial entry, non-Federal active duty, or any dishonorable service; certain training-only periods without honorable active duty integration are also ineligible. Posthumous awards are authorized if the Soldier dies in the line of duty during qualifying training or service on or after 1 August 1981. No devices, such as oak leaf clusters or numerals, are authorized for the , emphasizing its status as a one-time entered directly into personnel records without formal orders. Unlike the Good Conduct Medal, which recognizes sustained exemplary conduct over extended periods, the ASR focuses solely on initial qualification and entry-level honorable service.

Adjusted Service Rating Score

The (ASRS) was a point-based established by the U.S. War Department in to facilitate the equitable and orderly of over 8 million soldiers in the aftermath of World War II's European theater. Announced shortly after V-E Day on May 8, 1945, the aimed to prioritize releases based on individual merit rather than arbitrary unit disbandments, addressing morale concerns and preventing the chaotic discharges seen after . By assigning points for service duration, overseas assignments, family obligations, campaign participation, and military decorations, the ASRS sought to balance rapid personnel reductions with ongoing needs for occupation forces in and preparations for the Pacific theater. Points under the ASRS were calculated as follows: 1 point per month of domestic since September 16, , plus an additional 1 point per month of overseas during the same period, effectively doubling credits for time abroad. Dependents contributed significantly, with 12 points awarded for each child under 18 years old, capped at three children for a maximum of 36 points; no separate points were allocated for spouses. Combat-related credits included 5 points per campaign participation (via battle stars on theater ribbons) and 5 points per decoration, such as , Bronze Star, or , though higher awards like the could yield multiples based on receipt. These allocations emphasized length of and family status as primary factors, with combat bonuses providing targeted recognition for frontline contributions. Eligibility for discharge initially required a minimum score of 85 points, which was lowered to 80 points on , 1945, following V-J Day, and progressively reduced further—to 70 points by October 1945 and 60 points by November 1945—as global hostilities ended and demands stabilized. This adjustment enabled the swift release of high-scoring personnel, resulting in the of over 4 million soldiers by the end of the year, shrinking the from 8.3 million personnel in May 1945 to 684,000 by July 1947. The system's efficiency in processing monthly quotas of up to 800,000 s highlighted its role in , the broader repatriation effort. Despite its successes, the ASRS drew substantial for inherent inequities, particularly how it allowed some junior officers and rear-echelon staff—often with longer stateside service or more dependents—to surpass veterans in points, despite the latter's higher risks and shorter overall tenures. Frontline soldiers expressed resentment over equal campaign credits for support roles and the undervaluation of decorations relative to time-based points, leading to issues, protests, and congressional scrutiny of the War Department's administration. These flaws underscored administrative challenges, including score recomputations and exemptions for "essential" specialists, ultimately informing post-WWII reforms in management.

Air-sea rescue

Air-sea rescue encompasses military-coordinated operations aimed at locating and recovering personnel in distress over water bodies, such as downed pilots, aircrews, and sailors from or vessel incidents. These efforts originated during , when U.S. and Allied forces increasingly relied on dedicated assets to address the high risk of ditching in oceanic theaters. The U.S. Army Air Forces and established formal units in 1943, employing a combination of like the PBY flying boats, surface ships designated as lifeguard vessels, and submarines positioned for rapid intervention to retrieve survivors. In the Pacific theater, these operations proved vital, with U.S. forces recovering over 2,150 flight personnel from all services through coordinated air and sea efforts. Key techniques developed during this period focused on enhancing survivor visibility and location accuracy while minimizing exposure time in hazardous waters. Personnel were equipped with dye markers, which released fluorescent green stains in the sea to mark positions for overhead during daylight searches. Radio beacons, including direction-finding equipment, allowed distressed individuals to transmit signals for by rescue units. As helicopter technology advanced post-war, deployment of rescue swimmers or hoist operations from rotary-wing became a cornerstone method, enabling direct extractions even in rough seas. These approaches significantly improved survival rates, with submarines alone accounting for 504 airmen rescues across all services during the conflict. In the modern context, has integrated into multinational frameworks, including NATO's allied doctrine for personnel recovery, which emphasizes coordinated use of air, surface, and subsurface assets in environments. The U.S. plays a central role in domestic and international protocols, maintaining readiness for prompt alerts and launches, often within 15 to 30 minutes of a to maximize survivor viability. These evolutions build on WWII foundations, incorporating advanced , communications, and exercises like NATO's drills to ensure interoperability among allies. Essential equipment supports these operations by sustaining survivors until extraction. Inflatable life rafts provide immediate flotation and , often equipped with canopies for protection from elements. kits include essentials like rations, tablets, medical supplies, and signaling tools such as flares and electronic beacons. Sea anchors, including systems like those in MK-series configurations, are deployed to stabilize rafts by reducing drift and facing them into waves, preventing . often overlaps with in contested areas, where tactics must account for adversarial threats during recovery.

Organizations and companies

ASR Nederland

ASR Nederland N.V., commonly known as a.s.r., is a multinational and company headquartered in , . The company traces its origins to 1720 with the establishment of N.V. Maatschappij van Assurantie, Discontering en Beleening der Stad Rotterdam, but its modern form emerged from the 2000 merger between Fortis AMEV and the , which included insurers such as De Amersfoortse, Stad Rotterdam Verzekeringen, and Woudsend Verzekeringen. This consolidation positioned a.s.r. as a major player in the sector, focusing on a broad portfolio of products for private individuals, self-employed professionals, and small to medium-sized enterprises. The company provides a range of services including property and casualty insurance, disability coverage, , , pensions, mortgages, and banking through its subsidiary Knab. As of 2023, a.s.r. served over 3.5 million customers and generated gross premiums received of €8.8 billion, reflecting its significant scale in non-life and life segments. In 2024, the operating result increased to €1,428 million. Key brands and subsidiaries include De Amersfoortse for SME-focused offerings and Europeesche Verzekeringen, which was integrated into the a.s.r. in 2023 after operating as a specialist in travel and expatriate since 1920. Following the , the Dutch government acquired a majority stake in a.s.r. as part of the Fortis bailout, leading to its spin-off as a standalone entity in 2008. The company went public via an on in 2016, with the state fully divesting its remaining 20.5% stake in 2017, marking its complete re-privatization and return to private ownership. In recent years, a.s.r. expanded through the 2023 acquisition of Nederland, enhancing its market position; in September 2025, Aegon sold additional shares in a.s.r., further reducing its stake. a.s.r.'s emphasizes digital , such as online platforms and data-driven services, alongside sustainability-linked policies that promote reduction and ethical investments, excluding sectors like and child labor. As one of the largest insurers in the , it holds a notable presence in the broader market.

Association for the Sociology of Religion

The Association for the Sociology of Religion (ASR) is an international scholarly organization dedicated to advancing theoretical and empirical research in the . Founded on March 26, 1938, as the American Catholic Sociological Society (ACSS) at by Ralph A. Gallagher, S.J., it initially focused on Catholic perspectives but evolved into a diverse, global entity. By its first year, the society had grown to approximately 100 members and committed to holding annual meetings while launching its journal, The American Catholic Sociological Review. In 1958, it aligned its annual meetings with those of the (ASA), fostering closer ties to the broader sociological community; the journal was renamed Sociological Analysis in 1964. The organization achieved full independence and rebranded as the ASR in 1970, reflecting its expanded scope beyond Catholic sociology, with membership surpassing 700 scholars worldwide by the early . ASR's core activities include organizing annual conferences that facilitate the exchange of on religious phenomena and publishing the peer-reviewed Sociology of : A Quarterly Review, which members receive in print and online formats. These efforts promote interdisciplinary approaches, integrating sociological methods with historical, comparative, and theoretical analyses of topics such as , religious movements, and global faith dynamics. The association also hosts joint sessions and receptions with the 's Religion Section during ASA meetings, enhancing collaborative opportunities among sociologists and scholars from related disciplines. Additionally, ASR offers grants, awards, and professional development resources to support innovative studies in the field. Membership in ASR is open to researchers and academics globally, emphasizing rigorous empirical and theoretical investigations into religion's social dimensions, with benefits including discounted access to publications and conference participation. Over the decades, the organization has marked significant milestones, such as its journal's renaming in to its current title, underscoring its commitment to contemporary scholarship. Through these initiatives, ASR continues to serve as a vital hub for understanding religion's role in society.

American Sugar Refining

The (ASR) was established in 1891 in as a reorganization of the Sugar Refineries Company, commonly known as the Sugar Trust, which had been formed in 1887 by industry leaders including Henry O. Havemeyer to consolidate fragmented refineries and achieve in processing. This formation allowed ASR to rapidly expand by acquiring competitors, resulting in control over nearly 98% of refining capacity shortly after the 1891 reorganization, though its share had declined to around 50% by 1907. The company's operations centered on refining raw cane imported primarily from , supplemented by domestic beet sources, which enabled efficient production and distribution across the . ASR maintained its market dominance through aggressive acquisitions and , including investments in Cuban plantations and U.S. beet fields, until facing significant antitrust challenges in the early . The U.S. government initiated the landmark 1895 case United States v. E.C. Knight Co., alleging that ASR's 1891 purchase of refineries violated the by creating a manufacturing ; however, the Court ruled 8-1 that the acquisitions affected intrastate rather than interstate commerce, allowing ASR to persist largely intact. Renewed scrutiny culminated in a federal antitrust suit accusing the company of monopolistic practices and corruption in lobbying for favorable tariffs, leading to congressional hearings in 1911-1912 and internal reforms, though no formal dissolution occurred. During this period, ASR introduced iconic consumer brands like Domino Sugar in 1900, which became synonymous with refined granulated sugar and helped embed the company in everyday American households. The company also encountered controversy in the early over allegations of manipulating weighing scales at its facilities to underreport imports and evade duties, with prosecutors detailing methods such as "rolling the ball" to falsify balances, resulting in estimated of up to 14 pounds per lot and prompting investigations by the Treasury Department. These scandals highlighted ethical lapses amid ASR's market power but did not derail its operations, as the firm continued to refine millions of tons annually from its key plants in , , and , . In its modern iteration, ASR evolved through a series of , culminating in 2013 when , Inc.—a direct descendant incorporating historic assets like the Domino brand and original refineries—rebranded as ASR Group under the ownership of the Fanjul family's Florida Crystals Corporation. Today, ASR Group operates as the world's largest refiner and marketer of cane , with an annual capacity exceeding 6 million tons, and maintains major facilities including the Baltimore Refinery in ; the Yonkers Refinery in is scheduled to close at the end of 2025. This continuity underscores ASR's enduring influence on the U.S. , where it standardized refined distribution and supported widespread adoption in , , and processed foods.

Alpha Sigma Rho

Alpha Sigma Rho Sorority, Inc. is an Asian-interest social sorority founded in the fall of 1998 at the in by twelve women seeking to promote sisterhood, cultural diversity, and unity among Asian-American women. As the first Asian-interest sorority in and the Southeast, it was established as an inclusive organization open to women of all heritages who share an interest in Asian awareness and intercultural relationships, emphasizing mutual respect and bridging cultural barriers. The sorority's motto, "Strength in Unity," reflects its core values of academic excellence, interpersonal growth, moral development, and collective empowerment. Its official colors are red, white, and silver, symbolizing passion, purity, and elegance, while symbols such as the calla lily flower, mascot, gemstone, and the character for "woman" (女) are revealed to members during to underscore themes of and femininity. Since its founding, Alpha Sigma Rho has grown to include eight active chapters and four associate chapters across twelve universities in states including , , , , and , with hundreds of active and alumnae members nationwide. Membership in Alpha Sigma Rho centers on fostering lifelong sisterhood, academic achievement, leadership, and community service, with a focus on personal and collective growth among women. The engages in cultural that celebrate Asian heritage and , alongside efforts supporting , particularly through partnerships with the National Ovarian Cancer Coalition; for instance, its Alpha Chapter raised over $2,600 for the cause during its 25th anniversary celebration in 2023. As part of the broader landscape of multicultural life , Alpha Sigma Rho continues to expand its impact on university campuses.

Aid Still Required

Aid Still Required (ASR) is a United States-based dedicated to providing humanitarian support in the aftermath of disasters. It was granted 501(c)(3) tax-exempt status in 2010 and is headquartered in . The organization's mission centers on addressing the needs of communities overlooked after and human crises have faded from attention, by developing sustainable programs that promote dignity, self-sufficiency, and long-term recovery. ASR partners closely with local community leaders and Haitian staff to implement initiatives, ensuring that 100% of donations directly fund on-the-ground efforts led by an all-Haitian team of approximately 99 workers. ASR's operations primarily focus on , where it supports education through five schools equipped with solar-powered computer labs and English-language programs, alongside health and well-being services including trauma relief, in-home medical care, and vocational training in handicrafts and small businesses. Additional efforts encompass youth programs for at-risk children, marine restoration, and projects to foster community-driven redevelopment. Unlike immediate relief efforts, ASR emphasizes enduring solutions such as , , and economic empowerment to build resilience in vulnerable areas. This approach aligns briefly with broader international networks by prioritizing collaboration with local entities for sustainable impact in post-crisis environments.

Science

Ancestral sequence reconstruction

Ancestral reconstruction (ASR) is a computational and experimental technique in that infers the or sequences of genes and proteins from extinct ancestors by analyzing sequences from living descendants within a phylogenetic framework. This method enables the "resurrection" of ancient biomolecules through gene synthesis and , allowing researchers to characterize their biochemical properties and test evolutionary hypotheses directly. The approach originated conceptually in the 1960s with proposals for "molecular " by Émile Zuckerkandl and , but computational advancements in the , including phylogenetic tree-building algorithms, made it feasible. The process begins with the of homologous sequences from extant species, followed by the construction of a that models evolutionary relationships and divergence times. Ancestral states are then reconstructed at internal nodes using statistical methods, with maximum likelihood being the most common due to its incorporation of evolutionary models like substitution rates and branch lengths. In contrast, reconstruction seeks the sequence requiring the fewest changes along the tree branches, offering simplicity but less accuracy for deeply diverged lineages where multiple substitutions obscure . The first experimental resurrections occurred in the early 1990s, when Steven Benner's group reconstructed an ancestral and Allan Wilson's group revived an ancient , demonstrating that inferred sequences could fold and function similarly to modern variants. ASR has broad applications in elucidating protein and facilitating . By resurrecting ancient forms, scientists can trace functional shifts, such as changes in substrate specificity or stability over geological timescales. For instance, reconstruction of ancestral luciferases revealed that in their common , dating back about 100 million years, emitted green light, with subsequent color variations evolving through specific substitutions for ecological adaptations like mate attraction. Similarly, the ~450-million-year-old precursor to receptors was resurrected to show how ancient proteins bound multiple hormones promiscuously, enabling later specialization after . These insights tie briefly to broader by validating models of molecular adaptation. In , resurrected enzymes often exhibit enhanced , making them valuable scaffolds for designing robust biocatalysts in . Recent advances as of 2025 incorporate and autoregressive generative models for more accurate , with applications in studying and enzymes like ancestral PETases for . Despite its power, ASR has limitations stemming from assumptions about evolutionary processes. Accurate phylogenies are essential; inaccuracies in tree topology or branch lengths can propagate errors into reconstructed sequences, particularly for rapidly evolving sites or ancient nodes with sparse data. Methods like maximum likelihood mitigate this by integrating estimates, but they require appropriate models, and phenomena such as recombination or selection pressures may not be fully captured. Overall, ASR provides rigorous, experimentally testable glimpses into , prioritizing high-confidence inferences from well-supported trees.

Acute stress reaction

Acute stress reaction (ASR), also known as (ASD) in frameworks, refers to the immediate psychological and physiological response to a traumatic , characterized by a transient disturbance that typically lasts from hours to days. It was introduced as a diagnostic category in the Diagnostic and Statistical of Mental Disorders, Fourth Edition (-IV) in 1994, serving as a short-term reaction and potential precursor to (PTSD) if symptoms persist beyond one month; ASR specifically aligns with the diagnosis (F43.0), while under (effective 2022), it is described as transient symptoms (QE84) rather than a formal disorder. This condition arises following exposure to actual or threatened , serious injury, or , with symptoms required to begin within three days of the and include at least nine out of 14 possible manifestations across categories such as intrusion, negative mood, dissociation, avoidance, and arousal. Key symptoms of ASR encompass psychological dissociation (e.g., numbing, , or depersonalization), hypervigilance (increased alertness and ), and avoidance behaviors (efforts to evade reminders), which disrupt normal functioning and emotional processing. These reactions affect 20-50% of survivors, particularly in cases of interpersonal violence such as assault or rape, with notably higher rates observed in combat settings where intense exposure amplifies vulnerability—studies of veterans, for instance, indicate acute stress symptoms in up to 90% of heavily engaged troops during active conflict. Physiologically, ASR involves a surge in mediated by activation of the axis, alongside heightened activity that enhances fear processing and emotional reactivity, preparing the body for immediate threat response but potentially overwhelming cognitive control if prolonged. Treatment for ASR emphasizes early intervention to mitigate escalation to chronic stress disorders like PTSD, focusing on supportive rather than confrontational approaches. , an evidence-informed strategy, is recommended as the primary response, involving promotion of safety, emotional stabilization, and connection to resources without forcing trauma debriefing, which has shown efficacy in reducing distress in the acute phase among trauma-exposed individuals. This non-invasive method prioritizes resilience-building and practical assistance, typically delivered in the immediate aftermath by trained responders in settings like emergency departments or disaster scenes.

Adult sex ratio

The adult sex ratio (ASR) is defined as the proportion of males to females in a , typically expressed as the number of males per 100 females, encompassing all sexually mature individuals regardless of reproductive activity. This metric significantly influences systems and behaviors across , as imbalances can intensify competition for mates and alter patterns. In , ASR variations shape strategies such as mate guarding or , linking directly to broader theories of . Several factors contribute to ASR deviations from , including differential mortality rates—where males often face higher risks from predation, , or risky behaviors, resulting in female-biased ratios—sex-biased , such as male-dominated labor flows, and human-specific practices like sex-biased or selective abortions favoring s. In human populations, the global ASR averages approximately 101 males per 100 females as of 2025, reflecting a slight male that diminishes with age due to mortality differences; however, regional variations are pronounced, with exhibiting an ASR of approximately 104 males per 100 females as of 2023 (down from about 108 in the mid-2000s), driven by historical cultural son preferences and associated sex-selective practices. These imbalances can have cascading effects on social structures, including marriage markets and gender roles, with ongoing concerns in male-biased regions like parts of leading to issues such as increased . In ecological contexts, highly skewed ASRs promote polygynous systems, as exemplified by southern elephant seals (Mirounga leonina), where extreme male-biased ratios—arising from high male mortality among non-dominant individuals—enable a few alpha males to monopolize harems of dozens of females, leading to intense male-male competition and vast reproductive variance. This phenomenon aligns with ' seminal parental investment theory (1972), which posits that the sex investing more in offspring (typically females) becomes the limiting resource, amplifying the effects of ASR on mating dynamics and evolutionary pressures. Measurement of ASR relies on or demographic surveys that capture population data by and , often adjusted to define "adults" as individuals aged 15–64 or 20+ to exclude juveniles while accounting for cultural or biological maturity thresholds; international bodies like the use such standardized data for cross-population comparisons.

Technology

Automatic speech recognition

Automatic speech recognition (ASR), also known as speech-to-text or computer speech recognition, is an interdisciplinary field of artificial intelligence and computer science that enables machines to convert spoken language into readable text. The technology processes audio input through signal processing and machine learning algorithms to identify phonetic sounds, words, and sentences. ASR systems have evolved from rudimentary digit recognizers to sophisticated tools capable of handling continuous speech in multiple languages, forming the foundation for voice-enabled interactions in everyday computing. The origins of ASR trace back to the 1950s, when Bell Laboratories developed the Audrey system, a hardware-based device that could recognize spoken digits from 0 to 9 with about 90% accuracy under controlled conditions, marking the first practical demonstration of voice recognition. A key milestone came in the 1970s through the U.S. Defense Advanced Research Projects Agency (DARPA) Speech Understanding Research (SUR) program (1971–1976), which funded collaborative efforts to build systems recognizing continuous speech from small vocabularies of up to 1,000 words, laying groundwork for rule-based and statistical approaches. The post-2010 deep learning revolution transformed ASR, with advancements like DeepMind's WaveNet (2016) enabling generative modeling of raw audio waveforms and improving phonetic representations in neural architectures. At its core, an ASR system integrates three primary components: the acoustic model, which analyzes audio features to predict phonetic probabilities; the pronunciation lexicon (or dictionary), which maps words to sequences of phonemes accounting for variations; and the , which incorporates grammatical and contextual probabilities to disambiguate word sequences. These elements work together in a decoding process to produce the most likely transcription. A notable advancement has been the decline in word error rates (WER) for English conversational speech, from around 20% in 2010 using hybrid statistical models to under 5% by 2023 on benchmarks like Switchboard, driven by end-to-end neural networks that jointly optimize all components without explicit phonetic alignments. ASR finds widespread applications in virtual assistants like Apple's , which relies on it for command interpretation and response generation, and in automated transcription for meetings, captions, and accessibility tools. Early architectures predominantly used Hidden Markov Models (HMMs) to model temporal speech sequences probabilistically, often combined with Gaussian mixture models for acoustic likelihoods; however, since the 2010s, Deep Neural Networks (DNNs) have largely supplanted them by learning hierarchical feature representations directly from data, yielding lower error rates and greater robustness. Despite these gains, persistent challenges include accurately transcribing diverse accents, dialects, and speech in noisy environments, where performance can degrade significantly due to variations in pronunciation and interfering signals. ASR often integrates briefly with to refine semantic intent from recognized text.

Airport surveillance radar

Airport surveillance radar (ASR) systems are specialized installations designed to monitor positions in the terminal airspace surrounding airports, providing essential data for . These systems originated in the late 1940s as part of early efforts to integrate into for safer separation and sequencing. The U.S. (FAA) and its predecessor, the Civil Aeronautics Administration, began deploying the first ASR models, such as the ASR-1, by 1950 to address growing air traffic demands post-World War II. Subsequent advancements led to the ASR-9 in the , which improved reliability for major airports, and the ASR-11 in the early , incorporating for enhanced performance; both models operate primarily in the S-band frequency range of 2700–2900 MHz to minimize atmospheric . ASR functions by detecting aircraft position, range, and speed within a typical coverage area extending up to 60 nautical miles horizontally and 25,000 feet in altitude. The system combines , which uses reflected echoes from aircraft surfaces to track non-cooperative targets without onboard equipment, and , operating in the L-band (1030–1090 MHz), which interrogates aircraft transponders to obtain data, including altitude and identification codes. This integration allows controllers to distinguish aircraft reliably, even in low-visibility conditions, while supporting speeds from stationary to over 700 knots. The FAA has installed ASR systems at more than 230 sites nationwide, primarily at terminal radar approach control facilities, to ensure comprehensive coverage of busy . The ASR-11 variant introduces advanced clutter rejection algorithms, including adaptive thresholding and scan-to-scan , which reduce false alarms from ground returns, , or compared to analog predecessors like the ASR-8. In , the rotates continuously at 12.5 —completing a scan every 4.8 seconds—to deliver near-real-time updates, enabling effective tracking of both transponder-equipped and non-cooperative . By providing controllers with precise , ASR contributes to through timely conflict detection and resolution.

Automotive shredder residue

Automotive shredder residue (ASR) is the non-metallic fraction remaining after end-of-life vehicles (ELVs) are shredded and metals are recovered during processes. This residue is generated when ELVs are processed in hammer mills to separate metals (typically 70-75% of the mass) and non-ferrous metals (5-10%), leaving behind the heterogeneous non-metallic components that account for 20-25% of the original vehicle weight. In the , ASR production reached approximately 2-2.5 million tonnes annually around the early 2010s, representing about 10% of total generated. The composition of ASR is highly variable but primarily consists of plastics (around 31%, including polyolefins, PVC, , , , and ), rubber (8%), (12%), textiles and carpeting (13%), and metal fines (20%), and (15%). Up to 20% of the plastics fraction can be PVC, along with other hazardous substances such as polychlorinated biphenyls (PCBs) and at concentrations up to 10 times those in . European Union Directive 2000/53/EC, enacted to promote sustainable , set targets to minimize ASR landfilling by requiring 95% of ELV weight to be reused or recovered by 2015 (with 85% through and 10% via ), thereby reducing the environmental burden of this waste stream. Environmentally, ASR poses significant risks when landfilled, as it can release leachates containing organic compounds and into , while produces with polycyclic aromatic hydrocarbons (PAHs) and volatile organic compounds (VOCs). The presence of PVC contributes to potential emissions of and dioxins during improper handling. To mitigate these impacts, post-shredder technologies such as separation are employed to further isolate non-ferrous materials and reduce the residue volume before final disposal or treatment. ASR management strategies emphasize over landfilling, including to generate and to produce recoverable oils and . These thermal processes, often combined with mechanical pre-treatments, enable material and contribute to goals by diverting waste from landfills and harnessing embedded value.

Aquifer storage and

Aquifer storage and recovery (ASR) is a management technique designed for seasonal or long-term water storage, involving the injection of excess into suitable for later . This method was pioneered during the 1960s, with early implementations such as the Boron Community Services District well in established in 1967, and subsequent projects in , including those by the South Florida Water Management District, which expanded ASR applications for brackish aquifer storage starting in the 1970s and 1980s. By recharging during wet periods, ASR addresses in regions prone to variability in rainfall and demand. The ASR process typically begins with pretreatment of source water—such as surface or reclaimed water—to remove particulates, pathogens, and incompatible chemicals, ensuring it meets compatibility standards. Treated water is then injected into confined or semi-confined s via dedicated wells, often at rates determined by the formation's permeability and storage volume. Recovery occurs through pumping from the same or adjacent wells during dry periods, with recovery efficiencies varying from 50% to over 90% depending on site and operational cycles. Globally, managed recharge () systems, including ASR, have grown to a total capacity exceeding 10 billion cubic meters as of 2015, reflecting a 4.5% annual growth rate since the 1960s; in , large-scale projects demonstrate significant scale, with potential storage capacities at individual sites reaching up to 280 gigaliters based on conservative appraisals. ASR offers key benefits in by creating underground reservoirs that buffer against supply shortages, allowing water utilities to store surplus during high-flow seasons for reliable extraction later. Additionally, the subsurface enables natural through biogeochemical processes, often improving by reducing pathogens, organic compounds, and even mobilizing beneficial ions while attenuating contaminants. However, a primary operational challenge is well clogging from suspended , iron precipitates, or microbial growth during injection, which reduces recharge rates and can be mitigated through periodic backflushing—pumping at higher rates to dislodge accumulations—or enhanced pretreatment. In the United States, ASR facilities are subject to stringent regulations under the Agency's (EPA) Underground Injection Control (UIC) program, part of the , which classifies ASR wells as Class V and requires permits, hydrogeological assessments, and ongoing to prevent migration of contaminants into sources. Operators must track water quality parameters like , trace metals, and disinfection byproducts during injection and , with thresholds enforced to ensure recovered water meets potable standards or designated uses. These guidelines help balance ASR's benefits with risks, promoting sustainable implementation across diverse aquifers.

Anti-Slip Regulation

Anti-Slip Regulation (ASR), also known as Acceleration Slip Regulation or in , is an automotive electronic stability system designed to prevent wheel spin during acceleration, particularly on slippery surfaces. Developed by , ASR was first introduced as a in 1986, marking an early integration of electronic control. By the early 1990s, Bosch had expanded ASR into series production across multiple variants, enhancing its compatibility with anti-lock braking systems () for broader application in passenger vehicles. The system operates by continuously monitoring wheel speeds via sensors to detect excessive slip between the driven wheels and the road surface. When slip is identified—typically exceeding a predefined —the () intervenes by reducing engine through adjustment, ignition retardation, or fuel cutoff, and, if necessary, selectively applying to the slipping wheel to to the wheel with better grip. Key components include wheel speed sensors shared with the , the central ECU for processing signals, and actuators in the engine management and braking systems. This mechanism ensures improved vehicle stability and acceleration without compromising directional control. In specific implementations, such as 's all-wheel-drive system, ASR integrates with to dynamically distribute power across wheels and axles, optimizing traction during cornering or on low-friction roads. Originally a standalone feature, ASR has evolved into a core component of more advanced electronic stability programs (), which introduced in 1995 in collaboration with . Since November 2014, —encompassing ASR functionality—has been mandatory on all new passenger cars and light commercial vehicles in the , significantly enhancing standards.

Computing

Cisco Aggregation Services Router

The Aggregation Services Router (ASR) series comprises high-performance networking platforms designed primarily for service provider edge and aggregation , enabling scalable handling of and video traffic in carrier environments. Launched in with the introduction of the ASR 9000 series alongside IOS XR Software Release 3.7.2, these routers were engineered to support the growing demands of networks, providing modular architectures for and flexibility. The series features a distributed and redundant components, including route switch processors, power supplies, and fans, to ensure nonstop operations even during hardware failures or software upgrades. Key to the ASR platform's capabilities is its support for advanced traffic management, optimized for video and IP services through features like high-density Ethernet interfaces and environmentally efficient cooling systems that achieve low power consumption per gigabit of throughput. The ASR 9000 series, targeted at core network deployments, scales to system capacities of up to 160 Tbps in larger chassis models, such as the ASR 9922, while delivering line-rate performance for 10G, 100G, and 400G Ethernet ports. Recent line cards introduced around 2024-2025 extend support to 800G Ethernet ports for even higher density in multi-rate configurations (1G to 800G). In contrast, the ASR 1000 series serves enterprise WAN aggregation needs with throughput ranging from 2.5 Gbps to 200 Gbps, incorporating integrated services like encryption and firewall capabilities via Cisco IOS XE software. Both series emphasize modularity, allowing service providers to mix line cards for diverse interface types without compromising performance. Notable advancements include 2022 innovations in silicon-based line cards for the ASR 9000, introducing 400G and 200G modular options that support multi-rate ports (1G to 400G) for enhanced density and efficiency in IP over DWDM environments. Subsequent IOS XR releases, such as version 25.3.1 in 2025, added features like YANG-Push telemetry, advanced SRv6 steering, and improved SSH controls. These routers are widely deployed in service provider networks for applications such as MPLS label switching to enable VPNs and traffic engineering, alongside Quality of Service (QoS) mechanisms for prioritizing broadband aggregation, video streaming, and mobile backhaul traffic. As part of Cisco's broader networking portfolio, the ASR series integrates seamlessly with other elements like optical transport systems to support evolving 5G and cloud-scale infrastructures.

RWTH ASR

RWTH ASR, commonly abbreviated as RASR, is an open-source toolkit for developed by the Human Language Technology and group at . It provides a flexible framework for building and evaluating systems, primarily targeted at research applications. First publicly released in 2009 under the RWTH ASR License—a derivative of the Q Public License—the toolkit has evolved to support modern architectures while maintaining its core emphasis on modularity and extensibility. A key strength of RASR lies in its modular pipeline, which decouples components for acoustic modeling, language modeling, and decoding, allowing researchers to experiment with custom configurations via a C++ API. It supports batch processing for efficient handling of large datasets, including distributed training and decoding on grid computing environments, which scales by dividing audio into segments. Since 2014, RASR has incorporated support for hybrid deep neural network-hidden Markov model (DNN-HMM) systems through its RASR/NN extension, enabling the integration of neural acoustic models for improved recognition accuracy in research settings. Additionally, it facilitates feature extraction via integration with the Kaldi toolkit, enhancing compatibility for preprocessing tasks like computing mel-frequency cepstral coefficients. RASR has been widely applied in academic prototyping and multilingual projects, where its flexibility aids in developing systems for diverse languages and domains. The toolkit builds on established automatic principles, such as hybrid modeling, to enable rapid iteration in experimental setups. It has contributed to competitive performances in challenges, including participation in Interspeech evaluations; for instance, the 2023 release of RASR2 extended support for generic sequence-to-sequence models, while RWTH systems using RASR achieved strong results in low-resource medical domain tasks around the same period. The toolkit continues to be used in 2025 research, including papers on neural front-ends and end-to-end models at conferences like NAACL and Interspeech, without a major new release since 2023. Ongoing development and maintenance are handled by RWTH Aachen's Human Language Technology group, with the latest versions available via GitHub for community contributions and updates.

Transport

Erkilet International Airport

Erkilet International Airport (IATA: ASR, ICAO: LTAU), located approximately 5 km north of Kayseri city center in central Turkey, serves as the primary airport for the Kayseri region and a key gateway to Cappadocia. The airport opened to civil aviation in 1998, transitioning from its earlier role as a military facility to accommodate growing domestic and international demand. The facility is a dual-use military airbase and public airport, hosting the Turkish Air Force's 12th Air Transport Main Base Command, which operates tactical including and A400M Atlas models. It features one : 07/25 measuring 3,000 m in length by 45 m wide, supporting a range of commercial and military operations. maintains a significant presence as a hub, offering frequent domestic flights to and , alongside seasonal international routes. The airport's name derives from the nearby Erkilet district. Historically, the site functioned as a during , contributing to air efforts in the region. In , Erkilet handled 1,885,345 passengers, reflecting its role in regional and , with expanded through a new 51,000 sqm terminal inaugurated in late to boost annual throughput. Connectivity extends to major European hubs like and , Middle Eastern destinations including , and domestic links via and low-cost carriers like , integrating Erkilet into Turkey's broader aviation network.

State Railway of Thailand ASR class

The ASR class is a series of multiple units (DMUs) introduced in 1990 to enhance services on the country's metre-gauge network. These trains were developed as an export variant of the Express Sprinter, with significant adaptations to suit Thailand's 1,000 mm and local operational requirements. Built by (BREL) at their , the ASR class represented an early effort to modernize Thailand's rail fleet with air-conditioned, higher-speed for travel. A total of 20 carriages were constructed, comprising cab cars (2501–2512) and power cars (2113–2120), equipped with diesel engines providing diesel-hydraulic transmission for smooth acceleration and efficiency on uneven tracks. Key specifications include a top speed of 120 km/h, making them suitable for faster express runs compared to older SRT , and full air-conditioning for passenger comfort in Thailand's . The units feature inward-opening slam doors for quick boarding and buck-eye couplers for reliable connections, though they lack the plug doors found on the standard Class 158. These DMUs were initially deployed on northern lines, such as the to route, where the first Sprinter services commenced in June 1991 under train numbers 907/908. In operation, the ASR class supports both commuter and services, primarily as "Special Express" trains marked with "ด่วนพิเศษ" on the bodysides, offering premium seating in a spacious designed for longer journeys. Over time, reliability issues led to a refurbishment program in the , which included interior updates, livery changes to SRT's blue and orange scheme, and mechanical overhauls to extend service life and improve performance. Today, while some units have been withdrawn due to accidents or age, the remaining fleet continues limited duties, contributing to Southeast Asian rail modernization efforts amid broader and high-speed initiatives.

Other uses

Asr (prayer)

The , known as Salah al-Asr, is one of the five obligatory daily prayers () in , performed in the afternoon to fulfill the religious duty of worship established in the and . It serves as a moment of reflection and submission to God during the latter part of the day, bridging midday activities and evening routines. The prayer typically comprises four (obligatory) rak'ahs, with four (recommended) rak'ahs performed beforehand to follow the Prophet Muhammad's example, though the sunnah portion is optional but highly encouraged for spiritual reward. The timing of the Asr prayer is determined by the sun's position, beginning when the shadow of an object equals its own length (plus the shadow length at noon, according to the majority of scholars in the Maliki, Shafi'i, and Hanbali schools) and ending just before sunset. In the , the preferred starting time is later, when the shadow is twice the object's length, allowing the prayer to be observed closer to sunset while still within the valid window. This variation reflects scholarly interpretations of prophetic traditions on solar shadows, ensuring flexibility across geographical contexts without altering the prayer's end time. The Prophet Muhammad underscored its significance in authentic hadiths, warning that intentionally missing Asr is akin to losing one's family and possessions, and stating that consistent performance of Asr and Fajr prayers guarantees protection from and entry into Paradise. In practice, the Asr prayer is performed standing facing the in (qibla), beginning with the (Allahu Akbar) and including the recitation of Surah Al-Fatiha—the opening chapter of the —in every rak'ah, followed by additional Quranic verses in the first two rak'ahs. The sequence involves bowing (ruku'), prostration (), and sitting positions, all conducted in ritual purity (). These elements emphasize mindfulness and devotion, with the prayer's structure identical to other except for its timing. Within Muslim communities, the Asr prayer often marks an afternoon pause from work or daily tasks, fostering communal solidarity as mosques fill for congregational observance and promoting a rhythmic between worldly duties and renewal. As part of Islam's pillar of , it reinforces the faith's emphasis on timed devotion throughout the day.

Academy at Swift River

The Academy at Swift River (ASR) was a coeducational located in Cummington and Plainfield, , operating from July 1997 to the end of the 2012–2013 school year as part of the troubled teen industry, which provides residential interventions for adolescents facing behavioral, emotional, and challenges. Founded by the Aspen Education Group on a 636-acre , it emphasized personal growth through a combination of rigorous academics and experiential therapies tailored to students struggling with issues such as defiance, academic underachievement, and concerns. The school's program integrated wilderness therapy—featuring outdoor activities like hiking, rock climbing, kayaking, and overnight camping—to foster resilience and self-reflection, alongside equine-assisted learning sessions that supported emotional regulation and interpersonal skills development. It served students aged 13 to 18, with a maximum enrollment of around 60, and was accredited by the Massachusetts Department of Education while holding membership in the National Association of Therapeutic Schools and Programs (NATSAP) since 1999. Therapeutic approaches included dialectical behavior therapy, motivational interviewing, and psychodrama, all delivered by a clinical team within a college-preparatory framework. ASR shut down in August 2013 primarily due to financial pressures, including declining enrollment (from 60 students in fall 2012 to 42 by spring 2013) and families' difficulties obtaining loans or financing for treatment amid economic shifts. The closure occurred against a backdrop of industry-wide controversies, including allegations of and in programs operated by Aspen Education Group, as highlighted in a 2008 U.S. House subcommittee hearing that referenced thousands of such claims across residential facilities from 1990 to 2007. Specific to ASR, survivor accounts reported instances of physical, emotional, and mental , including forced labor, , , , untrained misconduct such as supplying drugs for sex, and of suicidal students; the school was also named in lawsuits in 2008 and 2010 and operated unlicensed since 2008. This event underscored ongoing debates in youth mental health care, prompting greater advocacy for regulatory reforms in therapeutic residential programs to enhance oversight and protect vulnerable teens.

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