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Archaeological Discovery: A significant archaeological find has occurred in Lefkada: the first ancient Greek theater discovered in the Ionian Islands. This is noteworthy as it provides new insight into the history and culture of the region.
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Location and Composition: The Ionian Islands are situated off the western coast of Greece in the Ionian Sea. The island group comprises seven major islands (Corfu, Paxi, Lefkada, Ithaki, Kefalonia, Zakynthos, and Kythira) and several smaller
ones. They are also known as the “Heptanese” or “Seven Islands”. -
Size and Geography: Kefalonia is the largest island. Mount Ainos is the highest point, reaching 1,628 m.
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Historical Context: The islands have a rich history, having been controlled by Venice, Russian and Turkish forces, Britain, before ultimately being ceded to Greece in 1864. This complex history has shaped the islands’ cultural identity.
05.04.25
BIMSTEC Summit Highlights
For Prelims:
- BIMSTEC: Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation, a regional organization.
- Region: Focuses on the Bay of Bengal region, connecting South Asia and Southeast Asia. Relevant to understanding India’s role in the Indo-Pacific and Indian Ocean.
- SAARC Alternative: BIMSTEC is viewed as a viable alternative to the South Asian Association for Regional Cooperation (SAARC).
Why in News:
* The 6th BIMSTEC Summit was hosted by Thailand.
* The summit focused on strengthening regional cooperation and addressing key challenges.
For Mains:
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Key Highlights of the 6th BIMSTEC Summit:
- Bangkok Vision 2030: A roadmap for regional prosperity, economic integration, and resilience.
- BIMSTEC Centres of Excellence: India to establish centers for Disaster Management, Sustainable Maritime Transport, Traditional Medicine, and Agriculture.
- BODHI Program: Skill development and capacity building program for BIMSTEC nations.
- Cancer Care Capacity Building: Proposed program for cancer care.
- BIMSTEC Chamber of Commerce and Business Summit: To promote regional economic integration.
- People-to-People Linkages: Initiatives like BIMSTEC Athletics Meet (2025), First BIMSTEC Games (2027), and cultural exchange programs to strengthen ties.
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Significance of BIMSTEC for Regional Cooperation:
- Act East Policy Alignment: Enhances India’s trade and security prominence.
- Alternative to SAARC: Provides a platform for regional cooperation in South Asia.
- Platform for Regional Cooperation: Facilitates cooperation among South and Southeast Asian countries, especially in security and HADR.
- Counterbalancing China: Serves as a platform to balance China’s growing influence in the region.
- Cultural Preservation: Promotes and preserves the region’s intangible cultural heritage.
Audible Enclaves and PAL Technology
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Audible Enclaves (AE) and Parametric Array Loudspeakers (PAL) Focus Sound: These technologies combat sound dispersion in noisy environments by creating focused sound beams. This ensures only the intended listener hears the audio.
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Audible Enclaves (AE): AE creates pockets of sound using two inaudible high-frequency waves. These waves interact non-linearly at a specific location to produce audible sound, offering privacy and personalized audio experiences.
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Parametric Array Loudspeakers (PAL): PAL uses modulated high-frequency ultrasonic waves to generate directional sound beams. These waves self-demodulate in the air, producing focused sound and minimizing unwanted dispersion.
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How PAL Works: PAL emits high-frequency waves modulated with an audio signal. As these waves travel, they
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AE’s Unique Approach: AE uses two inaudible high-frequency waves that, when they intersect, create audible sound only at that specific location.
Applications: PAL and AE are useful in museums, retail, public spaces, entertainment, assistive technology, and security. They provide targeted audio without disturbing others.
Published Research: A study published in Proceedings of the National Academy of Sciences highlights researchers’ success in creating audible enclaves using two high-frequency waves.