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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Improved Approximation Ratios of Fixed-Price Mechanisms in Bilateral Trades
双边贸易 固定价格机制 近似比率
2023/4/18
We study the performance of fixed-price mechanisms in the bilateral trade problem. We improve the approximation ratios of welfare-optimal mechanisms in several settings. In particular, when we have on...
Lower Bounds on Structure-Preserving Signatures for Bilateral Messages
Structure-Preserving Signatures Bilateral Messages Crucial Relation
2018/7/9
Lower bounds for structure-preserving signature (SPS) schemes based on non-interactive assumptions have only been established in the case of unilateral messages, i.e. schemes signing tuples of group e...
Cut-and-Choose Bilateral Oblivious Transfer and Its Application in Secure Two-party Computation
Secure Two-party Computation Round Complexity Cut-and-choose Inverse OT
2016/1/7
In secure two-party computation protocols, the cut-and-choose paradigm is used to prevent
the malicious party who constructs the garbled circuits from cheating. In previous realization of the cutand-...
Why Bilateral Damage Is Worse than Unilateral Damage to the Brain
Bilateral Damage Unilateral Damage Brain
2015/6/23
Human and animal lesion studies have shown that behavior can be catastrophically impaired after bilateral lesions but that unilateral damage often produces little or no effect, even controlling for le...
Bilateral hydronephrosis and hydroureter after ovariohysterectomy using nylon cable tie: a case report
megaoesophagus oesophagitis
2015/5/25
Acquired megaoesophagus was diagnosed in a seven-month-old Holstein steer. Clinical signs
included salivation, mild recurrent bloat, dysphagia or regurgitation of ingesta after swallowing and coughi...
Correct, Fake and Absent Pre-Information Does Not Affect the Occurrence and Magnitude of the Bilateral Force Deficit
Bilateral force deficit strength training lower extremities unilateral strength
2015/5/22
The present study examined whether different pre-information conditions could lead to a volitional modulation of the occurrence and magnitude of the bilateral force deficit (BFD) during isometric leg ...
Exercise-Related Bilateral Leg Atypical Claudication in Female Olympic Taekwondo Player:A Case Report
Entrapment syndrome popliteal artery compartment pressure lower extremity claudication
2015/5/8
We report the case of an Olympic taekwondo athlete with an atypical bilateral intermittent claudication that represented a handicap in her performance during competition fight. Diagnosis of chronic co...
Bilateral Volleyball-Related Deformity of the Little Fingers: Mallet Finger and Clinodactyly Mimic
Bilateral little-finger deformity mallet finger clinodactyly volleyball sport injury physis injury hand pain
2015/5/6
A 14-year-old male high school volleyball player was seen to evaluate right- and left-hand little-finger distal interphalangeal joint deformity and pain. His symptoms began during his second season of...
Bilateral hydronephrosis and hydroureter after ovariohysterectomy using nylon cable tie:a case report
Chlamydophila abortus internal control PCR
2015/4/30
Chlamydophila abortus (C. abortus) is one of the most important infectious agents causing abortion in ruminants. The bacterium is obligately intracellular, cannot grow on agar, but it needs cell cultu...
Bilateral ground reaction forces and joint moments for lateral sidestepping and crossover stepping tasks
Badminton movement biomechanics injury
2015/4/21
Racquet sports have high levels of joint injuries suggesting the joint loads during play may be excessive. Sports such as badminton employ lateral sidestepping (SS) and crossover stepping (XS) movemen...
Bilateral low grade serous adenocarcinoma of the ovaries in a badger (Meles meles L.) and its association with a borderline serous ovarian tumour: a case report
Meles meles ovary borderline serous tumour low grade serous carcinoma metastases
2015/4/17
Here, we describe a case of a wild female badger (a sow) with disseminated serous adenocarcinoma of the ovary which corresponds to a group of low grade serous carcinomas of the ovary in humans. Beside...
Surgical correction of bilateral polydactyly in a dromedary camel: a case report
supernumerary digit congenital anomaly single-humped Camelus dromedarius
2015/4/17
The following case report describes the diagnosis and surgery of bilateral polydactyly of unknown origin in a dromedary camel. A two-year-old, 290 kg, intact female camel was admitted for surgical rem...
Bone-conducted brainstem auditory evoked response in a dog with total bilateral ear canal ablation: a case report
bone conduction hearing dog
2015/4/8
The bone-conducted brainstem auditory evoked response test was performed in an eight-year-old dog with total bilateral ear canal ablation. It was found that 12 months after bilateral surgical ablation...
The Effect of Gender and Fatigue on the Biomechanics of Bilateral Landings from a Jump: Peak Values
Anterior cruciate ligament injury injury prevention knee injury sports biomechanics
2015/3/30
Female athletes are substantially more susceptible than males to suffer acute non-contact anterior cruciate ligament injury. A limited number of studies have identified possible biomechanical risk fac...
Bilateral Os Acromiale in a Division I Basketball Player
Injury shoulder athlete rehabilitation diagnosis
2015/3/11
An unfused acromial epiphysis, called os acromiale, can become unstable and mobile when the deltoid contracts. This may cause pain and lead to impingement syndrome and rotator cuff tearing. After sust...