CITIC Group (China)

Localized and delayed response of mold temperature to cooling channel activation in low-pressure die casting of aluminum alloy wheels

Low-pressure die-casting is the main forming method for aluminum alloy wheels, and the response characteristics of permanent mold temperature to the activation and deactivation of cooling channels are an important basis for the design and control of the cooling system in the low-...

Crushing of carbon-fiber reinforced thermoplastic energy absorbers under axial impact: Numerical modeling and experimental tests

This study presents a numerical and experimental investigation aimed at assessing the impact behavior, energy absorption characteristics, and failure modes of thermoplastic composite energy absorbers subjected to axial impact loads. The energy absorbers consist of thin-walled cyl...

Fatigue behavior of Joule-cured and oven-cured carbon/epoxy laminates: a generalized additive model analysis

Abstract Joule (resistive) heating is a promising alternative to conventional oven curing for carbon/epoxy composites because it provides fiber interior heating and can reduce cycle time and energy consumption. From a fatigue perspective, however, the influence of the curing rout...

Oversubscribing One TEE: 512 Registered Tenants, a 1.22× Gain, and Isolation at 0.54 Percent

One confidential GPU serves a limited number of concurrent tenants. This reportmeasures what happens when registration exceeds that number: idle tenants'key-separated KV state is parked to disk and revived on activation, on an AzureH100 confidential instance with SEV-SNP active a...

Archeology-inspired enhancement strategy for aluminum alloys

Metal casting naturally produces a fine-grained chill layer at the mold interface, although this surface layer is commonly removed during machining. Inspired by archeological observations of ancient Cu-Sn bronzes, we investigated the effects of preserving this naturally formed me...

Oversubscribing One TEE: 512 Registered Tenants, a 1.22× Gain, and Isolation at 0.54 Percent

One confidential GPU serves a limited number of concurrent tenants. This reportmeasures what happens when registration exceeds that number: idle tenants'key-separated KV state is parked to disk and revived on activation, on an AzureH100 confidential instance with SEV-SNP active a...

Isolation Through Orthonormal Rotation Holds

Per-tenant orthonormal rotation applied to attention K-vectors provides cryptographic isolation between tenants sharing a single language model instance. Within a tenant, rotation is an isometry — retrieval quality is preserved exactly. Across tenants, a wrong-key query returns c...

Isolation Through Orthonormal Rotation Holds

Per-tenant orthonormal rotation applied to attention K-vectors provides cryptographic isolation between tenants sharing a single language model instance. Within a tenant, rotation is an isometry — retrieval quality is preserved exactly. Across tenants, a wrong-key query returns c...

The Isometry Tax: At-Rest Leakage in Rotation-Isolated Multi-Tenant Vector Search as an Instance of Property-Preserving-Encryption Leakage, with Bounds on Its Mitigations

Multi-tenant vector indexes promise large cost savings by sharing one approximate-nearestneighbour structure across many tenants. Per-tenant orthonormal rotation is an appealing way to isolate those tenants: each tenant's vectors are rotated under a per-tenant key, within-tenant...