Pengaruh Konsentrasi Asam Sitrat dan Gula Pasir terhadap Kesegaran Bunga Potong Sedap Malam (Polianthes Tuberosa)

Penelitian ini bertujuan untuk: 1) mengkaji pengaruh asam sitrat dan gula pasir terhadap kesegaran bunga potong sedap malam (Polianthes tuberosa), 2) mengetahui konsentrasi asam sitrat dan gula pasir yang sesuai untuk memberikan kesegaran terhadap bunga potong sedap malam. Penelitian dilaksanakan pada tanggal 11-22 Desember 2014 di Laboratorium Agronomi, Fakultas Pertanian, Universitas Jenderal Soedirman Purwokerto. Penelitian ini menggunakan Rancangan Acak Kelompok Lengkap (RAKL) dengan 16 kombinasi perlakuan. Faktor yang pertama adalah konsentrasi asam sitrat dengan 4 (empat) taraf dan faktor yang kedua adalah konsentrasi Gula pasir dengan 4 (empat) taraf. Perlakuan tersebut diulang tiga kali. Variabel yang diamati adalah lama kesegaran bunga, persentase bunga mekar, persantase bunga layu, diameter tangkai bunga, diameter kuncup bunga, diameter bunga mekar, jumlah kuntum/tangkai, dan total larutan terserap. Hasil penelitian menunjukan bahwa hasil terbaik untuk masa kesegaran bunga pada konsentrasi asam sitrat 300 ppm yaitu 10,42 hari, persentase bunga mekar pada konsentrasi asam sitrat 150 ppm yaitu 52,20%, diameter bunga pada konsentrasi asam sitrat 0 ppm yaitu 24,74 mm dan total larutan terserap pada konsentrasi asam sitrat 450 ppm yaitu 285,00 ml. Lama kesegaran bunga pada konsentrasi gula pasir 6% yaitu 10,50 hari, persentasi bunga mekar pada konsentrasi gula 2% yaitu 53%, persentase bunga layu pada konsentrasi gula 0% yaitu 36,45% dan total larutan terserap pada konsentrasi gula 0% yaitu 285,83 ml. Untuk kombinasi konsentasi asam sitrat 300 ppm dan konsentrasi gula pasir 6% mampu memperpanjang masa kesegaran bunga potong yaitu 11 hari

Applying systems thinking and aligning it to systems engineering

This is a paper on thinking about thinking. Systems engineering is an emerging discipline in the area of defining and solving problems in the manner of (Wymore, 1993). The emerging paradigm for problem solving is “systems thinking”. Both systems engineering and systems thinking have recognized the need to view a system from more than one perspective. This paper proposes a set of perspectives for applying systems thinking in systems engineering and then defines a systems thinking perspective set of views for a system, the use of which will provide one way of aligning systems thinking to systems engineering. The paper then provides an example of applying the set of perspectives to the Royal Air Force Battle of Britain Air Defence System and shows that not only does the set of perspectives provide a way to model the system; it also picked up two potentially fatal flaws in the system. The paper then concludes with some observations on the state of systems engineering from a number of the perspectives

Dynamic Bayesian belief network to model the development of walking and cycling schemes

This paper aims to describe a model which represents the formulation of decision-making processes (over a number of years) affecting the step-changes of walking and cycling (WaC) schemes. These processes can be seen as being driven by a number of causal factors, many of which are associated with the attitudes of a variety of factors, in terms of both determining whether any scheme will be implemented and, if it is implemented, the extent to which it is used. The outputs of the model are pathways as to how the future might unfold (in terms of a number of future time steps) with respect to specific pedestrian and cyclist schemes. The transitions of the decision making processes are formulated using a qualitative simulation method, which describes the step-changes of the WaC scheme development. In this article a Bayesian belief network (BBN) theory is extended to model the influence between and within factors in the dynamic decision making process

New methodology for optimizing transit priority at the network level

A new methodology for optimizing transit road space priority at the network level is proposed. Transit vehicles carry large numbers of passengers within congested road space efficiently. This aids justification of transit priority. Almost all studies that have investigated transit priority lanes focus at a link or an arterial road level, and no study has investigated road space allocation for priority from a network perspective. The aim of the proposed approach is to find the optimum combination of exclusive lanes in an existing operational transport network. Mode share is assumed variable, and an assignment is performed for both private and transit traffic. The problem is formulated by using bilevel programming, which minimizes the total travel time. The approach is applied to an example network and the results are discussed. The approach can identify the optimal combination of transit priority lanes and achieve the global optimum of the objective function. Areas for further development are discussed

Dasar - Dasar Rekayasa Transportasi

xiii + 453 hl

Sacred vocation program follow up evaluation at the Baylor healthcare system

Background: The Sacred Vocation Program (SVP) (Amick B, Karff S., 2003) helps workers find meaning, spirituality, and see their job as a sacred vocation. The SVP is based on Participatory Action Research (PAR) (Minkler & Wallerstein, 1997; Parker & Wall, 1998). This study aims to evaluate the SVP implemented at the Baylor Healthcare System, Dallas-Fort Worth. Methods: The study design is a qualitative design. We used data from study participants who have participated in focus groups. During these focus groups specific questions and probes regarding the effectiveness of the SVP have been asked. We analyzed the focus groups and derived themes. Results: Results of this study demonstrate SVP helps graduates feel valued and important. The SVP has improved meaningful work for employees and improved a sense of belonging for participants. The program has also increased participant spirituality. The coping techniques developed during a SVP class helps participants deal with stressful situations. The SVP faces challenges of implementation fidelity, poor communication, program viability in tough economic times and implementation of phase II. Another sustainability challenge for SVP is the perception of the program being a religious one versus a spiritual program. Conclusion: Several aspects of the SVP work. The phase I of SVP is successful in improving meaningful work and a sense of belonging for participants. The coping techniques help participants deal with difficult work situations. The SVP can increase effectiveness through improvements in implementation fidelity, communication and leadership commitment