The purpose of this study was to determine the role of the ideal aspects of ownership structure and capital structure in determining the uncertainty model of operational of Walmart. This type of research is an explanatory survey using qualitative and quantitative approaches. The qualitative method is carried out by descriptive analysis by conducting a field survey using a questionnaire designed in such a way. Respondents of this study were the 78 managers of the community minimart in Medan City, North Sumatera, Indonesia who were selected by purposive sampling method. Meanwhile, the quantitative method was carried out using SEM PLS analysis by analyzing the indicators of aspects of ownership structure, capital structure and dimensions of operational success. The results show that the capital structure variable had a significant effect on Walmart's operational success. Meanwhile, the ownership structure variable had no significant effect on Walmart's operational success. The novelty that is produced from this research is that the success of community self-service is determined by the capital structure. Capital is an obstacle faced by community supermarkets because with limited capital it is difficult for community supermarkets to expand their business.

Bunyi memiliki banyak manfaat untuk kehidupan manusia dan makhuk lainnya. Akan tetapi bunyi yang berlebihan atau yang disebut kebisingan akan sangat menggangu dan akan menimbulkan kerugian bagi manusia. Pengendalian kebisingan sangat diperlukan untuk menciptakan lingkungan yang nyaman bebas dari kebisingan. Pengendalian kebisingan dapat dilakukan dengan berbagai teknik. Salah satu teknik pengendalian kebisingan itu adalah dengan menyerap bunyi. Terdapat banyak material teknik yang dapat digunakan sebagai bahan penyerap bunyi, salah satu contohnya adalah aluminium. Pada penelitian ini magnesium dipadukan dengan aluminium dengan cara pengecoran berongga dengan diameter rongga berbeda disetiap spesimen dan kemudian dilakukan pengujian serap bunyi dengan metode tabung impedansi sehingga dapat diketahui bagaimana pengaruhnya terhadap sifat penyerapan bunyi dari paduan aluminium-magnesium. Hasil penelitian ini menunjukkan bahwa koefisien serap bunyi tertinggi pada paduan aluminium-magnesium dengan diameter rongga 3 mm dan frekuensi yang paling baik diserap oleh material ini adalah 1500 Hz.

Devotion is done in Medan City and Lubuk Pakam,Sumatera Utara Province. Devotion takes the title "Training of Simple Cash Book Compilation for Multiple Small Medium Enterprises (SMEs)". Devotion to this community will be done for two householders from the preliminary survey who know that the housewives who do business behind this is the ability to perform activities that do not exist or simple cash bookkeeping do not know yet. The Community Service team will endeavor to assist the business partner on the basis of the difficulties it faces. Creating a better business. The target of mono community service activity this year is expected to develop business partner efforts that had been only staying at home so that will try to open the business of boiled noodles / satay then to sew can develop the seams. Many people will sew in their place.

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