System Identification and LMI Based Robust PID Control of a Two-Link Flexible Manipulator

This paper presents investigations into the development of a linear matrix inequalities (LMI) based robust PID control of a nonlinear Two-Link Flexible Manipulator (TLFM) incorporating payload. A set of linear models of a TLFM is obtained by using system identification method in which the linear model represents the operating ranges of the dynamic system. Thus, the LMI constraints permit to robustly guarantee a certain perturbation rejection level and a region of pole location.  To study the effectiveness of the controller, initially a PID control is developed for TLFM with varying payloads. The performances of the controllers are assessed in terms of the input tracking controller capability of the system as compared to the response with PID control. Moreover, the robustness of the LMI based robust PID control schemes is discussed. Finally, a comparative assessment of the control strategies is presented

Produksi dan keuntungan usaha ternak puyuh sebagai pendapatan alternatif

PRODUCTION AND PROFIT OF QUAIL FARMING AS AN ALTERNATIVE INCOME. The demand for livestock products every year had increased, so it needs to be balanced with its availability. Local poultry including quail can be developed to support self-sufficiency in providing food sources of animal protein. Quail had the prospect of being developed considering the city of Manado as a foreign tourist destination and its population tends to increase. Youth of Ulil Albab Mosque as a group that had introduced the quail farming business. The problem was the extent to which the success of the quail livestock business introduced by the Youth Group of Ulil Albab Mosque. This study was conducted with the aim of knowing the production and profit of quail farming as source of alternative income. The research method was survey method, the sample was determined purposively. The data collected were primary and secondary data. Respondents were youth group of the Ulil Albab Mosque on the Unsrat Campus determined by purposive sampling of 4 people. The data analysis was descriptive. The success of quail business depends on the characteristics of the group members. The business was developed as many as 200 heads with egg production increasing every day. Egg marketing was through online. Quail egg consumers were housewives. Purchases of eggs were made for consumption by family members. In conclusion, egg production of quail business of the Ulil Albab Mosque Youth group increased and the profits obtained were positive with R/C value of 1.38 Suggestion, it is necessary to expand the business so that the maximum consumption of quail eggs can be increased

Control of a gantry crane using input shaping schemes with distributed delay

This paper presents simulation and real-time implementation of input-shaping schemes with a distributed delay for control of a gantry crane. Both open-loop and closed-loop input-shaping schemes are considered. Zero vibration and zero vibration derivative input shapers are designed for performance comparison in terms of trolley position response and level of sway reduction. Simulation and experimental results have shown that all the shapers are able to reduce payload sway significantly while maintaining satisfactory position response. Investigations with different cable lengths that correspond to 620% changes in the sway frequency have shown the distributed delay-based shaper has asymmetric robustness behaviour. The shaper provides highest robustness for the case of 20% increase in the sway frequency but lower robustness for the case of 20% decrease. However, other schemes give symmetric robustness behaviour for both cases

An AC-DC Rectifier Design at 2.45 GHz for Wireless Power Transfer

In this paper, a microwave doubler rectifier design at 2.45 GHz is presented. This rectifier consists of a shortcircuited matching network, DC block interdigital capacitor and output radial filter. Two fast switching Schottky diodes of HSMS 286B are used for rectification process. The proposed rectifier is fabricated on a low-cost FR-4 substrate with relative permittivity of 4.4. From experimental results, the proposed rectifier can achieve an output greater than 7 V at an input power of 20 dBm. This rectifier has the capability of providing a high output voltage at low cost, which makes it suitable for wireless power transfer (WPT) applications

Pengaruh Sosialisasi Stabilisasi Bayi Pasca Resusitasi [Program S.t.a.b.l.e] Terhadap Peningkatan Pengetahuan Dan Sikap Bidan Di Puskesmas Kota Makassar Tahun 2016

Program S.T.A.B.L.E bertujuan me mastikan kondisi bayi dalam keadaan baik selama proses rujukan guna mencegah meningkatnya angka kesakitan dan timbul nya jejas (sequele) akibat asfiksia bayi ba ru lahir. Tujuan penelitian untuk mengetahui pengaruh sosialisasi program S.T. A.B.L.E pada bayi terhadap peningkatan pengetahu an dan sikap bidan yang bertugas di kamar bersalin beberapa puskesmas di Kota Makassar tahun 2016. Penelitian ini meng gunakan rancangan Quasi eksperimental dengan One Group pretest – post test. Penelitian ini dilaksanakan pada bulan Mei s.d Oktober 2016 terhadap bidan yang bertugas di kamar bersalin Puskesmas da lam lingkup wilayah kerja Dinas Keseha tan Kota Makasar yakni: Puskesmas Ma majang, Puskesmas Pattingalloang, Puskes mas Minasa Upa, Puskesmas Batua dan Puskesmas Antang Perumnas dengan jum lah populasi sebanyak 250 orang dan sam pel sebanyak 40 orang. Teknik pengambi lan sampel menggunakan Purposive Sam pling dengan kriteria inklusi : bidan yang bertugas di kamar bersalin Puskesmas PO NED Kota Makassar, bidan yang bertugas di kamar bersalin sebagai tenaga PNS dan tenaga magang sedangkan kriteria ekslusi : Bidan yang bertugas di Poliklinik Puskes mas PONED Kota Makassar, bidan yang bertugas di Puskesmas PONED yang tidak termasuk dalam pilihan sasaran penelitian. Proses pengumpulan data menggu nakan kuesioner tertutup untuk mengukur kemampuan kognitif dan sikap bidan ten tang program S.T.A.B.L.E yang dimodifi kasi dari S.T.A.B.L.E program pre-assess ment dan 6 th edition pre-assessment.. Pro ses analisis data menggunakan Uji T tidak berpasangan. Hasil penelitian menunjuk kan ada pengaruh sosialisasi terhadap pe ningkatan pengetahuan responden P value 0.0000 namun tidak ada pengaruh sosia lisasi terhadap Perubahan sikap responden dengan P value 1.0000

Factors influencing patient loyalty to outpatient medical services: an empirical analysis of the UAE’s government healthcare system

Purpose The aim of this research is to uncover issues that inhibit patients' satisfaction and loyalty and identify factors that could enhance customer retention by government hospitals in the United Arab Emirates (UAE). The mediating impact of outpatient satisfaction on service quality, word of mouth (WoM), hospital image, outpatient–physician relationship and outpatient loyalty were tested. Design/methodology/approach The sample data used to test the hypotheses were drawn from a pool of patients served by a government healthcare agency in Abu Dhabi. Questionnaires were provided to 418 participants using methods such as short message service, e-mail and face-to-face delivery. The data were analyzed using SmartPLS 3.3.2 software. Findings The results indicate that service quality, WoM and outpatient–physician relationship positively impact outpatient satisfaction and indirectly effect outpatient loyalty; that hospital image positively impacts outpatient satisfaction and loyalty and has a partially mediating effect on loyalty; that waiting time satisfaction has no effect on outpatient satisfaction and no moderating effect on the outpatient satisfaction–loyalty relationship and that switching cost has a positive effect on loyalty but no moderating effect on the outpatient satisfaction–loyalty relationship. Research limitations/implications The first limitation of this study concerns the fact that only patients who had previously been served by these hospitals' outpatient units were included. Furthermore, the research was not able to obtain extensive findings related to the various factors that negatively impacted patient satisfaction and loyalty among all of the departments of government hospitals, such as inpatient care and emergency care. Practical implications Centered on the findings from this research, increasing switching costs would prevent patients from switching to other healthcare providers. Therefore, it has the potential to create a false loyalty or a hostage customer (Jones and Sasser, 1995). Additionally, making patients feel connected to their treatment plan and engaged in their care by developing a tool to maintain their enthusiasm about their health is important. It is therefore recommended that government hospital care providers and management consider providing online tools that patients can use to self-manage their care. Social implications The results regarding patients' satisfaction level suggest several areas for improvement. The first pertains to waiting area entertainment and comfort because patients indicated that there is not enough entertainment or ways to pass the time when waiting for services. In addition to enhancing the entertainment and comfort of waiting areas, government hospital staff should maintain contact with patients who are waiting to ensure that they are aware of the time they will spend. Another area for improvement is the parking lot. During summer, patients prefer to walk less in the sun, which causes them to seek parking closer to the door. Government hospital management should consider different methods for transporting patients closer to the door, such as golf carts or valet services. Originality/value This is the first study to investigate the mediating impact of outpatients' satisfaction between its antecedents and loyalty in the UAE. These results provide an improved understanding of the factors influencing patient choices and establish more accurate methods for increasing patient loyalty to retain more patients

A DNA-Based T Cell Receptor Reveals a Role for Receptor Clustering in Ligand Discrimination

A T cell mounts an immune response by measuring the binding strength of its T cell receptor (TCR) for peptide-loaded MHCs (pMHC) on an antigen-presenting cell. How T cells convert the lifetime of the extracellular TCR-pMHC interaction into an intracellular signal remains unknown. Here, we developed a synthetic signaling system in which the extracellular domains of the TCR and pMHC were replaced with short hybridizing strands of DNA. Remarkably, T cells can discriminate between DNA ligands differing by a single base pair. Single-molecule imaging reveals that signaling is initiated when single ligand-bound receptors are converted into clusters, a time-dependent process requiring ligands with longer bound times. A computation model reveals that receptor clustering serves a kinetic proofreading function, enabling ligands with longer bound times to have disproportionally greater signaling outputs. These results suggest that spatial reorganization of receptors plays an important role in ligand discrimination in T cell signaling

A Parametric Study on Dual-Band Meander Line Monopole Antenna For RF Energy Harvesting

This paper studies the dual-band monopole antenna based on meander line structure for Global System for Mobile Communications (GSM) band applications, which is also has the potential to be used for RF energy harvesting. A meander line antenna with a conductor line is investigated during the design using the Computer Simulation Tool (CST) software. The antenna is fabricated on a double-sided FR-4 printed circuit board using an etching technique. The comparison between simulation and measurement results for the return loss and radiation patterns are observed and are in good agreement. A bandwidth of 97 MHz and return loss of -19.29 dB is obtained at the first frequency band, i,e. 915 MHz, while a bandwidth of 46.2 MHz with a return loss of -16.27 dB are obtained at the second frequency band, i.e. 1800 MHz. This study is an early investigation in designing the RF energy harvesting to support green technology and sustainable development particularly for Wireless Sensor Network (WSN) as well as Radio Frequency Identification (RFID) applications