IPTEK Journal of Proceedings Series
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Produksi Hidrolisat Keratin dari Bulu Domba Limbah Industri Penyamakan Kulit Menggunakan Kombinasi Basa dan Enzim
Get PDFLimbah buang bulu yang dihasilkan pada proses penyamakan kulit menimbulkan permasalahan dalam penanganannya karena limbah ini tidak dapat segera terdegradasi. Struktur utama bulu berupa protein keratin. Protein keratin dapat dihidrolisis untuk menghasilkan hidrolisat keratin yang dapat dimanfaatkan diantaranya untuk bahan kosmetik. Tujuan penelitian adalah untuk mengetahui pengaruh konsentrasi enzim terhadap kadar protein, kadar air, kadar sulfur, dan gugus fungsi FTIR. Bahan bulu yang digunakan adalah bulu domba limbah unhairing konvensional. Hidrolisis dilakukan dalam 2 tahap, yaitu basa dan enzimatis. Bulu domba dihidrolisis menggunakan larutan basa 0,5 M NaOH selama 24 jam dilanjutkan dengan hidrolisis menggunakan enzim protease dengan konsentrasi 0, 2, 4, 6, 8% dan waktu 18 jam. Kadar protein keratin tertinggi pada konsentrasi enzim protease 8% dan paling rendah pada konsentrasi enzim 6%. Gugus fungsi FTIR tidak berbeda nyata pada tiap konsentrasi enzim
Accounts Receivable Seamless Prediction for Companies by Using Multiclass Data Mining Model
Get PDFMost companies find themselves in highly competitive markets nowadays. As a result, many companies struggle to manage their financial obligation to pay their supplier on time. Delayed payments to suppliers can create all kinds of issue with the supplier's cash flow. Finding a way to reduce or avoid any potential losses because of this delay is needed. Currently, data mining techniques have been widely applied to the assessment or prediction of credit scores for customers in the banking industry (credit scoring), and the most commonly used method is classification. Based on previous studies, research has been conducted to develop a data mining model to produce the best classification model to predict a customer’s payment capabilities. With the application of data mining approaches using oversampling, feature selection (FS) algorithm, including Relief, Information Gain Ratio, PCA, and multiclass algorithm, including Random Forest, SVM, One-versus-all, All-versus-all and Error Correcting Output Coding (ECOC), is expected to produce good accuracy to predict the ability of these payments. As a result of this research, the model proposed can provide the best classification model with 84.24% accuracy and AUC value of 95.3% using sample dataset of manufacturing industry within three years perio
Influence of Game Design and Playability Toward Continuance Intention Using TAM Framework
Get PDFAs the growth of game industry, only few Studies in mobile games, and also focused on pre-adopting while ignoring post adoption behaviors. One intrinsic factor considered affecting gameplay is enjoyment. Some research has already conducted to understand what is enjoyment driver. Enjoyment is an external factor that influenced perceived usefulness. where perceived of usefulness is variable proposed in TAM. This study aims to examine impact the game design attribute that fit and influence enjoyment while play game and as a motive of continuance mobile game use in MOBA genre. This research adopts game design attributes of challenge, variety, novelty, design aesthetics, social interaction, playability attributes consist of perceived of use and interactivity. Structural Equation Modeling (SEM) is used for data analysis. The model is tested with 206 actual users. The findings put Novelty, design aesthetic and interactivity under observed. This research concluded that continual mobile game use is strongly driven by perceived of usefulness. The implications are discussed in the pape
Analysis of Application Based on Cloud Computing in Banking Industries in Indonesia Using Technology Acceptance Model (TAM) 2 Method Case Study The National Private Banks in Surabaya and Bali Region
Get PDFCloud computing applications remain rarely used in the banking industry in Indonesia. X is one of the national private banks in Indonesia, which is the first bank to use cloud computing application in their operations. Since it is the first bank to use such technology, the the researcher aims to measure the acceptance and ease of use of cloud computing-based applications, and to measure the level of user satisfaction with the TAM 2 method (Technology Acceptance Model 2). The researcher used the TAM 2 method because it is the development of the TAM 1 method which adds social influence and external perspective variables. Variables in TAM 2 are subjective norms, image, result demonstrability, job relevance, voluntariness, perceived usefulness, perceived ease of use, intention to use and usage behavior. Distribution of questionnaire samples was conducted to 90 respondents in Surabaya and Bali. Data from the questionnaire were tested in terms of validity and reliability, correlation and regression, variable descriptive analysis, and hypothesis. From the results, it was found that the twelve hypotheses in TAM 2 were all acceptable and the most significant effect was the outcome quality variable towards the benefits of using cloud computing applications at 41.2%. Therefore, it can be concluded that the greater the quality of the result of cloud computing applications, the greater the benefits of the technolog
Effect of safety climate relationship, and organizational culture on compliance regulation safety rules
Get PDFIndustry competition force companies to compete by optimizing their resources. The use of modern equipment is used to improve the productivity of the company to achieve effectiveness and efficiency. Reliable workforce needed to operate and support the running of modern equipment can meet the desired targets. In the operation of modern equipment it poses a risk of safety hazards and occupational health for the workforce. This risk can threaten the workforce at work, so special attention is needed by all concerned parties such as labor, companies and government
Effect a Chemical Treatment of Pineapple Leaf Fiber (PALF) for Mechanical Properties as a Reinforced Composite Matrix Polyesters
Get PDFApplication of composite materials as a alternative materials is developed, The most of composite material is polymer matrix composite (PMC), with the polymer as a matrix and the sintetic fiber such as fiberglass and fiber carbon as a reinforced, it can make a materials with intermediete mechanical properties such as strength, hardness and thoughness, between matrix and fiber. Since the synthetic fiber was dangerous for human, so recenly developing natural fiber composite with advantages of natural fiber is more environmentally friendly, and more cheap than synthetic fiber. Otherwise, natural fiber has stong enough when it use at interior automotive parts, such as dashboard. Some cars already use the natural fiber for the interior parts. The natural fiber has a big potential, especially pineapple in Indonesia, the pineapple production at East Kalimantan is 25 344 tonnes in 2014. It means a lot of leaves can be used for the natural fiber. Pineapple leaf fiber (Pineapple Leaf Fiber / PALF) has a pretty good tensile strength of 126 MPa, and Young modulus of 4405 MPa and has a cellulose content About a 70-80% cellulose, cellulose which has a crystalline structure, so it can be good reinforced for composite. The result of this experiment, the optimum value of tensile strength is 29.9648 MPa, at composite PALF – Alcalinitation 40%
Increasing Community Participation in Sustainable Urban Housing Renewal Implementation (Case Study: Sombo Walk-Up Flat)
No full textUrban housing renewal is one of the ways to solve housing problems such as environmental, social and economic degradation in the community. But housing problems is still found on post-renewal in social, economic, cultural and environmental aspects. This is probably happened because the local community is not holistically involved in the implementation of the development. This research uses qualitative method with purposive sampling technique. Data collection techniques through interviews to the original residents of Sombo walk-up flats, stakeholder and managers of Sombo walk-up flats and also conducted by field observations. Then, the analysis is using data triangulation. The results of this study indicate that community participation is still not done holistically in which the community is less empowered after urban housing renewal is done. Therefore local communities should be empowered to realize sustainable urban housing renewa
DESAIN PRODUK BANLEY (BARCODE SCANNER TROLLEY) TERHADAP FLEKSIBILITAS LAYANAN PEMBELIAN PRODUK
Get PDFBerubahnya pola belanja dan tingkat konsumerisme masyarakat dari pasar tradisional ke pasar modern telah memberikan ruang terhadap usaha ritel dewasa ini. Usaha ritel melayani pembelian dalam jumlah kecil maupun besar (grosir) dengan berbagai segmen pasar, strategi pemasaran yang tepat, potongan harga serta tempat berbelanja yang nyaman telah memberikan daya tarik tersendiri bagi masyarakat. Dengan pola belanja yang berubah maka tidak jarang kita lihat antrian pada kasir di waktu-waktu tertentu. Terkadang masalah lain juga muncul yaitu tidak sesuainya antara produk yang dijual dengan label yang ditempel pada rak. Disisi lain, papan promosi atau diskon juga tidak sesuai, sehingga membingungkan pembeli. Berdasarkan permasalahan tersebut, diciptakanlah BANLEY (Barcode Scanner Trolley). BANLEY merupakan trolley belanja pintar yang dapat mengidentifikasi harga secara langsung, memiliki sensor berat yang bekerja real time serta dilengkapi dengan fitur keterangan produk, harga satuan, total harga yang harus dibayarkan ke kasir dan berat produk secara keseluruhan. Berdasarkan kuesioner yang telah disebar pada 150 responden dengan 3 variabel yang penilaian yaitu keandalan, empati, serta kepuasaan pelanggan, hasilnya valid dan reliabel dengan nilai Cronbach Alpha >0.60
Model of the coil steels loading planning problem in railway carriage
Get PDFIn this paper, the coil steels loading planning problem in trains is considered. This problem consists of determining the optimal assignment of coil steels to wagon slots of train in order to maximize the total weight of coil steels in railway carriage. Both knapsack problems and linear programming method are used to develop model of coil steels loading planning problem. The comparisons between the subjective adjustment method and the best solution of proposed model were conducted and were found through extensive experimental test of proposed model. The results of proposed model presented that the amount of coils steels that were more than and the weights of coil steels heavier than subjective adjustment method