Package Declaration

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Peter J. Ashenden - One of the best experts on this subject based on the ideXlab platform.

  • Packages and Use Clauses
    The Designer's Guide to VHDL, 2002
    Co-Authors: Peter J. Ashenden
    Abstract:

    Publisher Summary Packages in VHDL provide an important way of organizing the data and subprograms declared in a model. This chapter describes the basics of Packages and show how they may be used. The chapter also reviews several predefined and standard Packages, which provide types and operators for use in VHDL models. A VHDL Package allows the collection of subprograms or statements into a separate design unit that can be worked on independently and reused in different parts of a model. Another important aspect of Packages is that they separate the external view of the items that they declare from the implementation of those items. The external view is specified in a Package Declaration, whereas the implementation is defined in a separate Package body. Subprograms in Package Declaration allows writing subprograms that implement useful operations and to call them from a number of different modules. Each Package Declaration that includes subprogram Declarations or deferred constant Declarations must have a corresponding Package body to fill in the missing details. Package Declaration and its corresponding Package body are separate design units; hence, they may be analyzed separately. Use clause makes Packages directly visible and makes Declaration writing simpler. Predefined types and operators can be used in VHDL models without having to write type Declarations or subprogram definitions for them. All these predefined items come from a special Package called standard, which is located in a special design library called std. The IEEE has published standards for Packages, which saves development time.

Kazulytė Ieva - One of the best experts on this subject based on the ideXlab platform.

  • Optimization of packaging materials and anvironmental impact reduction in accordance to the EU sustainability standarts (LST EN 13427-32:2006)
    Institutional Repository of Kaunas University of Technology, 2015
    Co-Authors: Kazulytė Ieva
    Abstract:

    Increasing the number of Packages which are available in the market of Republic of Lithuania ,it promotes greater their waste generation. Since 2015, November 1th, each packaging placed on the market will have to comply with the 94/62 / EC requirements, this means that every company will have to submit the Package Declaration of conformity. The aims of this work is to develop a harmonized EU approach on standards-based packaging systems and materials minimizing environmental impact. To examine market supply container verifying proposed model in Rebublic of Lithuania. It was developed a method for the selected company. It was identified relevant critical areas - criteria of optimization. It was performed testing of physical-machanical matter impact to packing and materials and it was developed optimal use of option Packages. The results led to the conclusion that the proposed method is effective

Bohuslava Tremlová - One of the best experts on this subject based on the ideXlab platform.

  • Detection of allergenic parvalbumin of Atlantic and Pacific herrings in fish products by PCR
    Food Additives & Contaminants: Part A, 2013
    Co-Authors: E. Rencova, D. Kostelnikova, Bohuslava Tremlová
    Abstract:

    The conventional polymerase chain reaction (PCR) method to detect the major allergenic protein parvalbumin beta 2 of Atlantic herring (Clupea harengus) and Pacific herring (Clupea pallasii) was developed. The specific set of primers for the amplification of the partial genomic sequence of the pvalb 2 gene encoding the main fish allergen of both herrings was designed and applied to the investigation of 24 commercial fish products. The targeted amplicon size was 189 bp of pvalb 2 gene of Atlantic herring and Pacific herring. As the internal amplification control, the DNA of 18S rRNA gene for eukaryotes (141 bp) was successfully used. The specificity of designed primer pair using 26 various fish species was assessed. The intrinsic detection limit was 10 pg µl−1 of the present specific DNA. Atlantic herring or Pacific herring allergenic parvalbumins were detected in 22 investigated fish products in conformity with the Package Declaration. Two fish products were negative in spite of the Declaration. The propos...

  • ELISA for Detection of Soya Proteins in Meat Products
    2008
    Co-Authors: Eva Renčová, Bohuslava Tremlová
    Abstract:

    Indirect competitive ELISA method for the detection of soya proteins in meat products was developed. The detection limit of the method is 0.5 % of the weight of added soya protein. A total of 131 meat product samples such as salamis or sausages from the Czech Republic market were investigated for the presence of soya proteins. Soya proteins were detected in 84 % of the investigated samples without any Declaration on the Package of the product. The use of vegetable additives, namely soya in meat products in the market of the Czech Republic is very frequent and the restriction of its usage by legislation relates only to some kinds of durable products and ham (Act 264/2003 Coll.). The need for sensitive inspecting methods for soya protein detection is not only associated with the economic aspect (adulteration), but mainly with consumer health protection in case of allergy to soya proteins. Detection, immunochemical method, meat products, Package Declaration Addition of vegetable components to meat products is nowadays a common practice, mainly for technological and economic reasons. Plant additives participate in water absorption, emulgating properties, and the ability to form fluffy structures, temperatur

Slavek Bulach - One of the best experts on this subject based on the ideXlab platform.

  • VHDL Manual
    1998
    Co-Authors: Richard Geißler, Slavek Bulach
    Abstract:

    Contents 1 Introduction 1 1.1 Motivation: IC Design Methodologies . . . . . . . . . . . . . . . 1 1.2 Contents and Structure of this Manual . . . . . . . . . . . . . . . 2 2 Basic VHDL Concepts 3 2.1 Components of a VHDL Model . . . . . . . . . . . . . . . . . . . 3 2.2 Entity Declaration . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3.1 Concurrent Behavioral Description . . . . . . . . . . . . . 7 2.3.2 Sequential Behavioral Description . . . . . . . . . . . . . 10 2.3.3 Structural Description . . . . . . . . . . . . . . . . . . . . 15 2.4 Configuration Declaration . . . . . . . . . . . . . . . . . . . . . . 17 2.4.1 Configuration of Behavioral Descriptions . . . . . . . . . . 17 2.4.2 Configuration of Structural Descriptions . . . . . . . . . . 18 2.5 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.5.1 Package Declaration . . . . .

Richard Geißler - One of the best experts on this subject based on the ideXlab platform.

  • VHDL Manual
    1998
    Co-Authors: Richard Geißler, Slavek Bulach
    Abstract:

    Contents 1 Introduction 1 1.1 Motivation: IC Design Methodologies . . . . . . . . . . . . . . . 1 1.2 Contents and Structure of this Manual . . . . . . . . . . . . . . . 2 2 Basic VHDL Concepts 3 2.1 Components of a VHDL Model . . . . . . . . . . . . . . . . . . . 3 2.2 Entity Declaration . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3.1 Concurrent Behavioral Description . . . . . . . . . . . . . 7 2.3.2 Sequential Behavioral Description . . . . . . . . . . . . . 10 2.3.3 Structural Description . . . . . . . . . . . . . . . . . . . . 15 2.4 Configuration Declaration . . . . . . . . . . . . . . . . . . . . . . 17 2.4.1 Configuration of Behavioral Descriptions . . . . . . . . . . 17 2.4.2 Configuration of Structural Descriptions . . . . . . . . . . 18 2.5 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.5.1 Package Declaration . . . . .