296 research outputs found

    Studies On Gas-Phase Oxidation Of Nitric Oxide Using Ozone [QK898.N58 A149 2007 f rb].

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    Pembebasan oksida-oksida nitrogen (NOx) seperti nitrik oksida dan nitrogen dioksida merupakan satu masalah dalam kawalan pencemaran alam sekitar. Emission of nitrogen oxides (NOx) such as nitric oxide and nitrogen dioxide presents a significant problem in environmental pollution control

    Steganography Detection and Analysis of Hidden Data in Images

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    Steganography is the art of hiding the information that is going to be sent from one party to another. Information can be hidden into image, text, audio or video. Steganography allowed communication to happen without other people notice there is transmission of message except the intended party. This project is to develop a program that can detect the presence or absence of the steganography in an image. The program is developed using Matlab. It is developed based on the existing algorithms which is Pairs Analysis, introduced by Fridrich et a!. We tried to write a simple embedding Matlab code to embed random message in the tested images. From the result that we got for each of the image with embedded message, we find the distribution graph for cover image and stegogramme. Threshold can be set up by calculating the overlapped area between the two distribution graphs. We plot the Receiver Operating Characteristic (ROC) graph in order to calculate the best and most accurate point to be set as threshold. Once we have set up the threshold for the cover image and stegogramme, the program will be tested on the images produce by the chosen steganography software, which is S-Tools and InfoStego. Both steganographic softwares are for spatial domain, which hide the secret message in the least significant bit (LSB) of image bits. For the output, our program is expected to produce histogram or graph that will detect the presence of the secret message in the cover image. This detection algorithm also produces the number of bitflips in the embedded image. The program should be able to estimate the length of the embedded message in percentage. The type of images used in this project are bmp,gif and jpeg format. They are comprised of natural images such as people, flowers, building, landscape and so forth

    Pasir dan Kerikil Sungai Mappili sebagai material Lokal untuk Campuran Beton di Sulawesi Barat

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    Dalam upaya meningkatkan kekuatan beton dengan menggunakan material lokal yang ada di Sulawesi Barat, sebagian masyarakat dan pelaku konstruksi menggunakan material untuk campuran beton berupa pasir dan kerikil dari Sungai Mapilli. Akan tetapi, uji karakteristik dan kelayakan material lokal ini sebagai material bangunan belum banyak dilakukan. Di sisi lain, perlu diketahui komposisi campuran beton untuk mendapatkan mutu beton K300. Ini menjadi sulit dicapai dengan penggunaan material lokal yang ada di Sulawesi Barat. Penelitian ini bertujuan untuk memberikan data terkait karakteristik material lokal yaitu pasir dan kerikil dari Sungai Mapilli dan untuk mendapatkan kuat tekan terbaik dengan variasi fas 40%, 50% dan 60%. Dari hasil pengujian diperoleh bahwa materil kerikil dan pasir Mapili layak untuk digunakan untuk campuran beton. Selain itu, didapatkan kuat tekan dengan FAS 40% dan 50% telah memenuhi kuat tekan rencana untuk bangunan konstruksi yaitu 24.9MPa

    PENGARUH LIMBAH BETON SEBAGAI PENGGANTI AGREGAT KASAR PADA KEKUATAN BETON

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    Banyak struktur di Indonesia sekarang telah mencapai akhir umur desainnya atau tidak dibangun sesuai dengan spesifikasinya. Pekerjaan pembongkaran atau pemeliharaan pada struktur tersebut menghasilkan sejumlah besar puing-puing beton. Mendaur ulang limbah beton akan mengurangi ruang TPA yang berharga dan menghemat sumber daya alam. Penelitian ini bertujuan untuk mengetahui kekuatan beton yang dibuat dengan agregat kasar dari limbah beton. Potensi limbah beton sebagai pengganti agregat kasar dalam beton telah diteliti. Limbah beton daur ulang digunakan sebagai agregat. Campuran beton dengan kekuatan karakteristik 28 hari yaitu 24,9 MPa dibuat dengan menggunakan rasio air/semen 0,4. Perkembangan kekuatan campuran beton yang mengandung agregat limbah beton dibandingkan dengan beton konvensional. Kuat tekan dan kuat tarik belah beton yang dibuat dengan agregat kasar daur ulang tergantung pada proporsi campuran. Secara umum, campuran beton yang mengandung agregat limbah beton daur ulang hingga 40% mencapai tingkat kekuatan antara 93,7 hingga 98,5% dibandingkan dengan beton konvensional. Hasil kuat tekan beton dengan limbah beton 10% menunjukkan nilai optimum pada umur 28 hari adalah 40,03 MPa dengan persentase kenaikan 16,4% dari beton normal. Hal ini menunjukkan bahwa limbah beton berpotensi untuk dimanfaatkan sebagai agregat kasar pada campuran beton

    Isolation, identification and antibiotic susceptibility of salmonella spp. in smoked food at Kuala Pilah, Negeri Sembilan by using mpn-pcr method / Fadhlul Khaliq Ab Patah

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    Smoked food was one of the most authentic dishes in Malaysian cuisines. However, consumers were still unaware on the hygienic level of these smoked products. Nowadays, the smoked products were smoked in an open space that allowed the contamination of bacteria on the food. The objective of this study is to detect the presence of Salmonella spp. in smoke fish and meat in Negeri Sembilan, Malaysia. The samples were randomly collected from the street stall in Kuala Pilah. The samples were found to be contaminated by Salmonella spp. with 24 x 10-7 MPN/g in smoked fish and 2.9 x 10-7 MPN/g in smoked meat and were confirmed by culturing on selective agar of Salmonella Shigella agar. By using MPN-PCR method, the prevalence of Salmonella spp. were found to be 68% in both samples. Salmonella spp. were 100% detected in smoked fish followed by smoked meat by 44% prevalence. All the positive isolates from MPN-PCR were continued with antibiotic susceptibility to determine the resistance level of Salmonella spp. towards selected antibiotics. As a results showed a multi-resistance patterns from one to four antibiotics tested with MAR indices ranging from 0.25 to 1.00

    The implementation of information strategies to support sustainable procurement

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    In our research context, sustainable procurement can be seen as a process to reduce damage to the environment by integrating certain aspects into making procurement decisions, such as value for money throughout the whole life cycle and being of benefit to society and the economy. This research has found more than one way of interpreting the ‘sustainable system’, for example, ‘green-friendly’ versus remaining effective in the long term. Sustainable procurement requires specific information to support the procurement process. The study reported in this thesis aimed to investigate the type of information needed in order for organisations to make correct sustainable procurement decisions. From these findings, information architecture for sustainable procurement in UK universities has been derived. While the initial focus has been on the information needed to make informed decisions in purchasing sustainable information technology (IT) equipment, it is believed that the framework would also be more widely applicable to other types of purchases. To ensure that these findings would support the university aspiration in terms of sustainability practices, a goal-context modelling technique called VMOST/B-SCP was chosen to analyse the sustainable procurement strategy in order to evaluate the alignment of IT strategy and its business strategy. A goal-context model using VMOST/B-SCP was produced to evaluate the procurement strategy, with this validated by procurement staff. This research helps to improve the way that goals and context are identified by integrating another technique, namely, social network analysis (SNA) to produce actor network diagrams. The VMOST/B-SCP technique is transferrable to the mapping of action strategies. The findings from goal-context modelling show that a goal-context model is not static: it changes as external circumstances and organisational priorities change. Most changes to the strategy occurred where external entities on which the change programme depended did not act as planned. The actor networks produced in our version of VMOST/B-SCP can be used to identify such risks. This research was pioneering in its use of VMOST/B-SCP in examining a business change while it was actually taking place rather than after it had been completed (and thus needed to accommodate changes in objectives and strategies). In addition, the research analysed a system with some IT support but where human-operated procedures predominated. The original B-SCP framework used Jackson’s problem frames which focus on possible software components: in our scenario, SNA-inspired actor diagrams were found to be more appropriate

    A Questão Cultural e sua Influência na Gestão de Equipes de Projetos Globais

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    The interactions between the project manager and team members may be affected by several variables, such as culture, leadership style of the project manager, and the complexity of the developed tasks. Focused in this context, the objective of this paper is to investigate and describe how the culture issue can affect the anagement of global project teams. It is a qualitative, descriptive study conducted in a large multinational company in the automotive sector. The results of this research show that cultural issues can influence both positively and negatively the management of project global teams and the managers of these projects have to deal with several management challenges that require the adoption of certain ways of dealing with culture impacts in managing their teams to minimize potential problems in this context.As interações entre o gerente de projetos e os membros da equipe podem ser afetadas por diversas variáveis, como a cultura, o estilo de liderança do gerente de projetos e a complexidade das tarefas desenvolvidas. Com foco nesse contexto, o objetivo geral neste artigo é investigar e descrever como a questão cultural pode influenciar a gestão de equipes de projetos globais. Trata-se de um estudo qualitativo e descritivo, realizado em uma empresa multinacional de grande porte do setor automobilístico. Os resultados obtidos nesta pesquisa demonstram que a questão cultural pode influenciar de forma tanto positiva quanto negativa a gestão de equipes de projetos globais e que os gerentes desse tipo de projetos têm de lidar com vários desafios gerenciais que exigem a adoção de determinadas formas de lidar com os impactos da cultura na gestão de suas equipes para minimizar os possíveis problemas existentes nesse contexto.

    CACAT QĀFIYAH DALAM PUISI UMRU’ AL-QAIS (KAJIAN PUISI PERSPEKTIF ILMU Al-QAWĀFI)

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    In general, the quality standard of classical Arabic poetry refers to the formulation of Al-Khalil bin Ahmad al-Farahidi, i.e Ilmu al-‘Arūd̩ wa al-Qawāfī. Even though these standards are so mainstream, in fact, some of the poetry of classical poets do not always live up to those standards, even the poetry of the great ones. This paper focuses on this, especially in terms of qāfiyah (rhymes of poetry), by taking the case of Umru' al-Qais poems as an example. The question that is then attempted to be answered is: how can a qualification be standardized when in fact, it is not fully followed by poets, even the great ones? The results of the discussion show that there are two possibilities. First, how the poets assessed the quality of poetry is different from how al-Farahidi did. Second, Al-Farahidi only took the abundant data available as what to be standardized in a theory

    Job Satisfaction of Vocational Agriculture Teachers in the Southeastern United States.

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    Job satisfaction of vocational agriculture teachers in the Southeastern United States was examined. A total of 355 teachers from seven states--Louisiana, Florida, Mississippi, Alabama, Virginia, Arkansas, and North Carolina--responded to the survey. Job satisfaction was measured by the Job Descriptive Index (JDI) which had six scales--work on present job, present pay, opportunities for promotion, supervision on present job, people on the job, and job in general. Fourteen demographic variables selected to be used as independent variables were age, highest degree completed, current annual salary, years of teaching experience, number of months employed per year, average number of students per class, average number of periods (1 hour) teaching per day, enrollment of school, population of community, number of professional organizations affiliated with, sex, geographical location, marital status, and religious affiliation. Three objectives were developed--(1) to determine if the selected demographic variables significantly related to the job satisfaction of the teachers, (2) to determine if the selected demographic variables significantly predict job satisfaction of the teachers, and (3) to determine job satisfaction of vocational agriculture teachers in the Southeastern United States as compared to the norm groups of the JDI. Findings revealed that annual salary, number of months employed per year, number of professional organizations affiliated with, sex, geographical location, marital status, age, years of teaching experience, religious affiliation, and number of periods teaching per day significantly correlated to job satisfaction of the teachers. It was found that number of months employed per year, number of professional organizations affiliated with, annual salary, sex, geographical location, number of periods taught per day, and age significantly predicted job satisfaction of the teachers. The study also revealed that the teachers scored higher on three measures of job satisfaction--work on present job, supervision, and people on the job--than those of the norm groups of the JDI

    SOSIALISASI MEMBANGUN RUMAH SEDERHANA TAHAN GEMPA UNTUK PARA TUKANG DI DESA MEKKATTA KECAMATAN MALUNDA, MAJENE-SULAWESI BARAT

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    Gempa Majene dan Mamuju berkekuatan M 6,2 pada 15 Januari 2021 pukul 02.28.17 WITA menyebabkan korban jiwa dan kerusakan parah pada bangunan rumah tinggal dan fasilitas umum.  Banyaknya rumah masyarakat yang dibangun tidak berdasarkan kaidah rumah sederhana tahan gempa sebagaimana telah diatur melalui SNI 1726. Kegiatan  pengabdian kepada  masyarakat ini bertujuan memberikan sosialisasi tentang membangun rumah sederhana tahan gempa kepada masyarakat dan pemberi jasa konstruksi/tukang di daerah yang terdampak bencana ini, yakni Desa Mekkatta Kec. Malunda Kab. Majene Sulawesi Barat. Pengabdian  ini  dinyatakan  berhasil ditinjau dari aspek afektif dan kognitif, peserta penyuluhan  telah memahami pentingnya  dan paham aturan teknis bangunan tahan gempa. Hal ini dibuktikan dari hari kusioner post-test setelah penyampaian materi. Sedangkan dari aspek psikomotorik, Tim Penyuluh belum dapat memantau perubahan perilaku terhadap sistem perencanaan dan pembangunan bangunan tahan gempa yang terjadi pada peserta penyuluhan, mengingat terbatasnya waktu dan minimnya dana penyuluhan. --- An earthquake hit Majene and Mamuju regency with an intensity of 6.2 M on January 15, 2021, at 02.28.17 WITA, which caused fatalities and severe damage to residential buildings and public facilities. Number of community houses built is not based on the rules of earthquake-resistant houses as regulated through SNI 1726. This society service activity aims to provide socialization about making earthquake-resistant houses for the community and contractor or builders in areas affected by this disaster, namely Desa Mekkatta, Malunda District, Majene Regency, West Sulawesi Province. This service was declared successful in terms of affective and cognitive aspects, and the counseling participants understood the importance and stick to the detail of engineering design for earthquake-resistant buildings. In terms of the psychomotor aspect, the counseling Team has not been able to monitor changes in behavior towards the planning system and construction of earthquake-resistant buildings that were applied by participants since the time and counseling funds were limited
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