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  <xsd:element abstract="true" id="ams_statement-statement-note-4-other-accrued-liabilities-other-accrued-liabilities-details" name="statement-statement-note-4-other-accrued-liabilities-other-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-4-other-accrued-liabilities-tables" name="statement-statement-note-4-other-accrued-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-5-leases-lease-cost-and-information-details" name="statement-statement-note-5-leases-lease-cost-and-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-5-leases-summary-of-maturities-of-lessee-operating-lease-liabilities-details" name="statement-statement-note-5-leases-summary-of-maturities-of-lessee-operating-lease-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-5-leases-tables" name="statement-statement-note-5-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-6-per-share-amounts-computation-of-basic-and-diluted-earnings-per-share-details" name="statement-statement-note-6-per-share-amounts-computation-of-basic-and-diluted-earnings-per-share-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-6-per-share-amounts-tables" name="statement-statement-note-6-per-share-amounts-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-9-related-party-transactions-and-balances-schedule-of-related-party-transactions-details" name="statement-statement-note-9-related-party-transactions-and-balances-schedule-of-related-party-transactions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-note-9-related-party-transactions-and-balances-tables" name="statement-statement-note-9-related-party-transactions-and-balances-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ams_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
