E-Queue Mobile Application: Empirical Study in Malaysia UTAR University

Waiting in line is a common experience in daily life, whether for a table at a popular restaurant or for the service at a bank. This experience is not always pleasant for most of people because they always have to wait for a long time to be serviced. The ability to interact with waiting customers is highly desirable because it allows businesses the opportunity to optimize their existing services and offer new services to waiting customers. However, interacting with individuals waiting in a queue has been inefficient and costly because employees must either talk with each waiting customer on an ongoing basis or the business must provide high tech devices that interact with each waiting customer. Agile methodology which will be used to develop this application, it incorporates the SDLC phases starting from the Planning phase up to the Maintenance phase. End of the research, we found that majority of respondents are prefer to use the proposed system compared with current method

ASIC Implementation of Multiplexer Based DAA

ABSTRACT: In Digital Image Processing Point, Line and Edge detection are performed through software approach. The proposed Architecture performs these operations through hardware approach using Distributed Arithmetic. Distributed arithmetic (DA) has been widely used to implement inner product computations with fixed inputs. Conventional ROM-based DA suffers from large ROM requirements. To reduce the memory requirements, Adder based DA uses pre-defined structure for computation. But both the methods are suitable only if at least one input is constant. This project aims to implement a new Distributed Arithmetic Architecture for point detection, line detection and edge detection in DIP when both the inputs are variable. The new architecture is termed as Multiplexer based Distributed Arithmetic (MUX based DA). The proposed architecture takes the advantage of Multiplexer and DA for inner product computations when both the inputs are variable. In addition it reduces ROM requirement and complexity in constructing Adder based architecture for higher order inputs. Here, the performance of proposed Architecture with ROM based DA, Adder based DA and with multiplier based implementation are compared. The MUX based DA reduces power up to 81% and needs 40% of area as compared with multiplier based implementation. KEYWORDS: ROM based DA,ADDER based DA,MULTIPLEXER based DA, CADENCE 180nm Technology. I.INTRODUCTION Distributed Arithmetic (DA) has been widely adopted for its computational efficiency in many digital signal processing applications. The most frequently used form of computation in digital signal processing is a sum of products which is dot-product or inner-product generation. DA is generally abit-serial computation operation that forms a product of two vectors in one clock cycle. The typical applications include DCT, DFT (Discrete Fourier Transform), FIR (Finite Impulse Response), and DHT (Discrete Hartley Transform) which can be found in main stream multimedia standards and telecommunication protocols. The advantage of DA is its special non multiplication mechanization which uses adder replacing multiplication and therefore simplifies the hardware implementation. The idea behind the conventional DA, called ROM based, is to replace multiplication operations by pre-computing all possible values and storing these in a ROM. The Adder based DA uses a fixed architecture which can be obtained by distributing fixed variable is used for inner product computation. The DA technique distributes arithmetic operation rather than lumps themas multipliers do. Conventional DA called ROM based DA decomposes the variable input of the inner product into bit level to generate pre-computed data.ROM based DA uses a ROM table to store the pre-computed data, which makesit regular and efficient in silicon area in VLSI implementation. However, when the size of the inner product increases the ROM area increases exponentially and becomes impractically large, even using ROM partition. In contrast to conventional DA, Adder based DA decomposes the other operand of inner product into bit level, distributes the multiplication operation, and shares the common summation terms .The adder based DA exploits the distribution of binary value pattern and may maximize the hardware sharing possibility in the implementation. Although the Adder based DA requires less hardware area and smaller computation cycle time than ROM based DA, both the existing method operates only on one input as fixed but the proposed MUX base DA computes result with both the input as variable as same as MAC. The direct implementation of the filter requires more number of resources, to reduce the number of resources Distributed Arithmetic came into existence which replaces multiplications by additions and siftings. The proposed DA algorithm came into existence which uses multiplexers to remove the usage of ROM memory and complexity in constructing fixed architecture for higher order inputs. The proposed MUX based D

Właściwości przeciwdrobnoustrojowe włóknin polipropylenowych pokrytych tlenkami metali stosowanych w wyrobach medycznych

In this study, an attempt was made to investigate the antimicrobial activity on polypropylene (PP) hydroentangled nonwoven fabrics coated with transition metal oxides. After etching the nonwoven fabrics with RF plasma, nano-scale coatings of ZnO and CuO were done using the KrF excimer based pulsed laser deposition technique (PLD). Morphological and antimicrobial studies were carried out to elucidate the mechanism of antibiocidal behaviour of the coated fabrics. Results showed significant antibacterial activity of ZnO and CuO coated PP hydroentangled nonwovens with a better activity against gram positive S.aureus than gram negative E.coli. Inherently non-toxic, PP has excellent chemical resistance and the use of specialised PP fibres for hydroentangled nonwovens could offer scope in addition to metal oxide coatings; nano-scale biological materials such as enzymes and drugs could add specific functionality for their use as medical textiles.W pracy podjęto próbę zbadania aktywności przeciwdrobnoustrojowej polipropylenowych włóknin pokrytych tlenkami metali. Przeprowadzono badania morfologiczne i przeciw- drobnoustrojowe powlekanych włóknin. Wyniki wykazały znaczną aktywność antybakteryjną włóknin pokrytych ZnO i CuO, przy czym wyższą aktywność antybakteryjną zaobserwowano wobec bakterii Gram-dodatnich (Staphylococcus ureus), niż wobec Gram-ujemnych (Escherichia coli). Stwierdzono, że zastosowanie nietoksycznego polipropylenu, który charakteryzuje się bardzo dobrą odpornością chemiczną, do wytwarzania włóknin powlekanych tlenkami metali pozwala na otrzymanie funkcjonalnych produktów medycznych

Research Article EFFICACY OF ANAMIRTA COCCULUS (LINN.) WIGHT AND ARN AND POGOSTEMON PANICULATUS (WILD) BENTH EXTRACT ON CULEX PIPIENS

ABSTRACT: Acetone extracts of Anamirta cocculus fruit and Pogostemon paniculatus leaf was tested for its larvicidal activity against different instars of Culex pipiens. The data on 24 hr LC50 and LC90 revealed that the acetone extracts of the selected plants have potential larvicidal properties. The LC50 values of the selected plant extracts are dose and time dependent and the data show a three to five fold increase in activity at 72 hr exposure. Total protein content of the different instars of the larvae of Culex pipiens are also estimated by modified Lowry method and result shows no significant differences between the control and treated larvae of Cx. pipiens. The essential oils of the two selected plant materials were extracted and conducted repellency tests. The study concludes that both acetone extracts and essential oils of the selected plant materials showed their potential to be used as biolarvicides especially to control mosquito populations. Key words: Anamirta cocculus, Pogostemon paniculatus larvicidal activity, Culex pipien

Heteroannulation of 3‑Nitroindoles and 3‑Nitrobenzo[<i>b</i>]thiophenes: A Multicomponent Approach toward Pyrrole-Fused Heterocycles

A simple, efficient, and general multicomponent reaction involving an enolizable ketone, a primary amine, and an N-protected 3-nitroindole was developed for the synthesis of a range of functionalized pyrrolo­[3,2-<i>b</i>]­indoles. The methodology was efficaciously utilized for the “pyrroloindoliztion” of natural products, the pyrrolization of 3-nitrobenzo­[<i>b</i>]­thiophene, and the gram-scale synthesis of pyrroloindole. Furthermore, a “one-pot” approach for accessing indolo­[3,2-<i>b</i>]­indoles was realized

Lewis Acid Catalyzed Regioselective Hydroheteroarylation of Pentafulvenes

A diverse approach toward the catalytic regioselective nucleophilic addition of nitrogen heterocycles to Lewis acid activated pentafulvenes has been established. The developed protocol introduces pentafulvenes as nonsymmetrical alkenes for the hydroheteroarylation reaction, providing alkylidenecyclopentenylation at the C-3 position of indoles and the C-2 position of pyrrole

One-Pot MCR-Oxidation Approach toward Indole-Fused Heteroacenes

A straightforward synthetic route toward indole-fused heteroacenes was developed. The strategy is composed of a one-pot process starting with a multicomponent reaction of cyclohexanone, primary amine and <i>N</i>-tosyl-3-nitroindole followed by an oxidation step. The one-pot approach was found to be general, affording both symmetric and nonsymmetric indolo­[3,2-<i>b</i>]­indoles in good yields. The strategy was also utilized for accessing 5-ring fused benzo­[g]­indolo­[3,2-<i>b</i>]­indole. We could extend the methodology for the synthesis of benzothieno­[3,2-<i>b</i>]­indoles starting from 3-nitrobenzothiophene. The importance of the developed method was exemplified by performing the reaction sequence on gram scale and also by the synthetic transformations of indolo­[3,2-<i>b</i>]­indoles. In addition, the change in photophysical properties with extension of conjugation of the synthesized heteroacenes was studied