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"ABSTRAKFuel magnetizer merupakan alat berbahan dasar magnet yang dapat meningkatkan efisiensi pembakaran pada kendaraan atau sistem pembakaran lainnya. Banyak penelitian yang mengkaji pengaruh magnet terhadap viskositas bahan bakar, efisiensi pembakaran, penghematan bahan bakar, maupun pengurangan emisi. Penelitian ini bertujuan untuk mengidentifikasi faktor yang paling berpengaruh terhadap performansi fuel magnetizer serta parameter optimal fuel magnetizer pada generator set berbahan bakar bensin dan kompor gas LPG menggunakan metode Rancangan Faktorial. Penelitian ini menggunakan tiga faktor dengan masing-masing faktor terdiri dari dua level. Hasil yang diperoleh menunjukkan bahwa parameter optimal fuel magnetizer pada generator set adalah fuel magnetizer dengan jenis magnet Ferrite C8, polaritas saling tolak menolak dengan arah kutub searah dengan aliran bahan bakar monopolar , dan berjumlah satu pasang yang dapat meningkatkan 10,05 lamanya waktu konsumsi bahan bakar. Sedangkan pada kompor gas diperoleh parameter optimal fuel magnetizer berjenis Ferrite C8, polaritas monopolar, dan berjumlah dua pasang yang dapat meningkatkan 7,69 kecepatan memanaskan air.

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ABSTRACT Fuel magnetizer is a magnetic device that can improve the combustion efficiency on vehicles or other combustion systems. Many studies have been studied about the effect of fuel magnetizer on fuel viscosity or combustion efficiency, fuel savings, and emissions reductions. This study aims to identify the main factors that can influence on the performance of fuel magnetizer and optimum fuel magnetizer parameters in gasoline generator set and LPG gas stove using Factorial Design method. This study used three factors with each factor consist of two levels. The result shows that the optimal parameters of fuel magnetizer in generator set are fuel magnetizer with Ferrite C8 magnet type, polarity repel each other with the liquid flows parallel to the lines of force in the magnetic field monopolar with one magnet pair installed on the fuel pipe. It can increase 10.05 duration of fuel consumption. While optimal parameters of fuel magnetizer in LPG gas stove are used fuel Ferrite C8 magnet type, monopolar polarity, and use two of magnet pairs installed on fuel pipe. It decrease 7.69 of water heating time. "

"Physical work environment is one of factor that influence performance worker, but this is rarely main attention industry, especially for worker as operator when he done. This happened in PT (Persero) Pelabuhan Indonesia III that manage container transportation with Gantry Crane, from shipping in Tanjung Mas Semarang. The problem in this case was operator time work not maximal, so target didn't reach. It was happen because physical work environment not ergonomic, such high temperature in room, level sound from machine very high, brightness is very high. Based on condition above, this research has goal to design physical work environment in operator room Gantry Crane. The design concern several aspects, such level sound from machine, temperature, and brightness in operator room. Method of this research is factorial experiment design with 3 factors (axbxc), use I 0 times replications. Data analysis used analysis variance (ANAVA) with F statistical at level I % and 5%. From the result analysis, it can be conclusions that improve level sound from machine, temperature, and brightness in operator room give influence to average operator time work in Gantry Crane. Operator works with optimal time work in temperature 24 - 26 UC, intensity fighting I 300-I 500liumen, use ear plug, and improve facility air conditioner (AC)."

"The study of combinatorial block designs is a vibrant area of combinatorial mathematics with connections to finite geometries, graph theory, coding theory and statistics. The practice of ordering combinatorial objects can trace its roots to bell ringing which originated in 17th century England, but only emerged as a significant modern research area with the work of F. Gray and N. de Bruijn. The book begins with background material on combinatorial block designs and combinatorial orderings, including Gray codes -- the most common and well-studied combinatorial ordering concept -- and universal cycles. The central chapter discusses how ordering concepts can be applied to block designs, with definitions from existing (configuration orderings) and new (Gray codes and universal cycles for designs) research. Two chapters are devoted to a survey of results in the field, including illustrative proofs and examples. The book concludes with a discussion of connections to a broad range of applications in computer science, engineering and statistics."

"Tempat tinggal merupakan salah satu kebutuhan primer manusia karena berfungsi untuk menaungi dan mengakomodasi berbagai aktivitas. Salah satu pemenuhan kebutuhan hunian adalah pembangunan perumahan formal, seperti tipe cluster yang ditujukan untuk membentuk lingkungan hunian yang berkualitas dan tertata. Perumahan tipe cluster dibangun oleh pengembang dengan bentuk dan desain yang seragam sehingga berpotensi menimbulkan ketidakpenuhan kriteria tempat tinggal penghuni. Fenomena ini menjadi satu dari berbagai alasan penghuni cluster melakukan housing adjustment dengan cara adaptasi hunian –tindakan pemodifikasian dan penyesuaian rumah atas situasi tertentu-. Dalam prosesnya, terdapat beberapa variabel, seperti tahap siklus dan gaya hidup keluarga yang memengaruhi adaptasi sebagai cara penyesuaian rumah terhadap hunian tipikal pada perumahan cluster. Mengingat, setiap hunian terdiri dari jumlah anggota keluarga, umur, latar belakang, dan persepsi yang berbeda. Skripsi ini membahas bagaimana penghuni rumah tipikal berusaha memodifikasi rumah berdasarkan siklus hidup anggota keluarga sesuai dengan aktivitas dan gaya hidupnya. Berdasarkan hasil peninjauan terhadap studi kasus di Cluster Savia, skripsi ini menunjukkan bahwa para penghuni cenderung melakukan adaptasi hunian untuk melengkapi kubutuhan yang belum terpenuhi. Skripsi ini menyimpulkan setiap keluarga menghasilkan bentuk penyesuaian yang variatif dan unik meskipun mereka tinggal di dalam rumah dengan luas dan tata ruang yang tipikal.

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Dwelling is one of the primary human needs because it functions to shelter and accommodate various activities. One of the fulfillment of dwelling needs is the construction of formal housing, such as the cluster type which is intended to form a quality and orderly residential environment. Developers build cluster-type housing with a typical form and design that has the potential to cause non-fulfillment of the criteria for occupant housing. This phenomenon is one of the various reasons for the occupants of the cluster to make housing adjustments using residential adaptation – the act of modifying and adjusting their homes to certain situations. In the process, there are several variables, such as the lifecycle stage and family lifestyle that influence adjustment as a way of adjusting to typical occupancy in housing clusters. Bearing in mind, each residence consists of several family members, ages, backgrounds, and different perceptions. This study discusses how the typical occupant tries to modify the house based on the life cycle of family members according to their activities and lifestyle. Based on the results of reporting on case studies in the Savia Cluster, this thesis shows that the occupants tend to make adjustments to their residences to fulfill their unfulfilled needs. This study concludes that every family produces varied and unique adjustment forms even though they live in a house with a typical area and layout."