Judul: Perancangan Sistem Pencatatan dan Pengendalian Persediaan di Factory Sharing Pengalengan Pangan
Abstrak: Inventory control is very crucial in ensuring the smoothness of production activities in a company. PT Kita Satu Rasa as a food canning factory sharing needs to have a systematic inventory control system to cope with uncertain demand and improve their service performance. This study aims to identify the need for an inventory control system at PT Kita Satu Rasa and to design an inventory control system that is able to meet the company's needs. The inventory control system is designed with the aim of maintaining the availability of cans so that the company will always be able to meet customer’s demand. The method used are the determination of safety stock and reorder point as a reference for the precise order time to the can supplier. The system is designed on Microsoft Excel software and tested for feasibility and suitability to meet company needs through usability testing, simulation, and interview. The results of usability testing show that the system is classified as very feasible with an acceptance percentage of 90%. Through simulation, the system is proven to be able to prevent stock outs compared to the method used by the company. The system is well received by the company and its implementation is expected to contribute to the improvement of the company’s performance and service as a canning service provider for MSMEs.
Keyword: inventory control, safety stock, reorder point, usability testing, pengendalian persediaan

Judul: Perancangan Sistem Penjadwalan Produksi untuk Factory Sharing Pengalengan Pangan di PT XYZ
Abstrak: PT XYZ is a shared factory company for canning various products to MSMEs and others. Less priority to customers with small number orders, inappropriate between total product shipments and product demands, high product variety, different processing time of each product, and limited number of machines and employees were problems that cause queues on production line and delays in product delivery. Therefore, it is necessary to design a production scheduling system that can produce an effective production schedule so that daily production capacity can be maximized, and the products can be completed on-time. The research was started in exploration phase by identifying existing factors that affect the production scheduling system in PT XYZ. These factors will become the inputs in designing the Microsoft Excel-based production scheduling system. The sequencing methods used in the system were Critical Ratio (CR) method and retort machine capacity adjustment. PT XYZ have approved the designed system since results of validation testing show a very feasible system for representative users with a percentage of 85% through Usability Testing and has been simulated to help reduce the total completion time with more remaining time by 48.2% and complete the entire production process on time (0 days delay).
Keyword: Critical Ratio, production order, production schedule, production scheduling system, shared factory

Judul: Hubungan filogenetik Microhyla, Tschudi 1839 dari Sumatera berdasarkan Gen 16S rRNA
Abstrak: Microhyla merupakan salah satu genus dari famili Microhylidae yang terdiri dari 40 spesies dan dideskripsikan sebagai genus baru oleh Tschudi tahun 1838. Genus ini memiliki ukuran tubuh yang relatif kecil jika dibandingankan dengan genus katak (anura) lainnya, dengan panjang tubuh berkisar 12-45 mm. Ciri khusus lain dari genus ini adalah timpanum tersembunyi, dan tidak memiliki gigi vomarine. Distribusi genus ini tersebar mulai dari Jepang, China Selatan sampai India, Srilanka, Asia Tenggara mencakup Sumatera, Borneo, Jawa, dan Bali. Tercatat ada lima spesies yang telah dilaporkan di Sumatera, yaitu M. berdmorei, M. heymonsi, M. palmipes dan M. superciliaris. Rekonstruksi pohon filogeni menggunakan analisis Unweighted Pair Group Method with Arithmetic Means (UPGMA), Neighbour Joining (NJ), Maximum Likelihood (ML) dan Bayesian Inference (BI) dengan membandingkan sekuen Gen 16S rRNA dari kawasan Sumatera yang mewakili Sumatera bagian utara, Sumatera bagian Barat, Sumatera bagian selatan, dan kawasan Asia. Topologi filogeni juga menyertakan sekuen outgroup yang terdiri dari Kaloula pulchra, Phrynella pulchra dan Kalophrynus plerostigma dari famili Microhylidae, Chalcorana chaconota dari famili Ranidae dan Leptobrachium waysepuntiense dari family Megophridae. Genus Microhyla dari Sumatera termasuk dalam kelompok M. achatina yang terdiri dari 2 subkelompok, kelompok M. heymonsi yang terdiri dari 3 subkelompok, kelompok M. fissipes yang terdiri dari 2 subkelompok, kelompok M. berdmorei yang hanya memiliki 1 kelompok, kelompok M. palmipes yang terdiri dari 2 subkelompok dan kelompok M. superciliaris hanya terdiri dari 1 kelompok. Jarak genetik yang cukup besar pada kelompok M. achatina (3,1−3,4%), M. heymonsi (3,3−7,1%), dan M. palmipes (2,5−3,4%) mengindikasikan adanya cryptic species pada kelompok tersebut.
Keyword: Microhyla, Jarak genetik, cryptic species